Given your history of lifelong pollen allergy, chronic nasal irritation, and frequent use of menthol/camphor inhalants, there are several plausible explanations for a slight but definite one-sided upper throat pain — but the fact that it is only on the left and has persisted for two weeks makes it worth paying attention to rather than dismissing. Allergies and postnasal drip can absolutely irritate the throat, sometimes more on one side, especially if mucus tends to drain preferentially or if you sleep on one side. Repeated menthol/camphor inhalant use can also irritate tissues, particularly if the nasal passages are chronically inflamed. Acid reflux — including the “silent” kind that does not feel like heartburn — can sometimes produce a localized throat discomfort as well.
But I would not stop there. A persistent unilateral (one-sided) throat pain lasting more than a couple of weeks, especially in an older adult, deserves someone actually looking at the throat, even if it seems minor and even if you do not smoke or drink. That does not mean cancer — in fact the common causes are much more common — but ENT physicians are trained to take “same spot, one side, persists” seriously because occasionally it reflects something localized: an inflamed tonsillar area, a tiny ulcer, a salivary gland issue, a dental problem referring pain upward, irritation around the larynx, or more rarely a growth.
A few details would alter how much concern I would have:
Is it worse when swallowing? Does it radiate toward the left ear? Any hoarseness, change in voice, sensation of something “stuck,” swollen gland in the neck, bad taste, dental trouble, fever, or worsening over the two weeks? And when you say “upper throat,” do you mean behind the nose/soft palate area, around the tonsil, or lower near the voice box?
If this were me advising an octogenarian friend who values staying ahead of problems, I would say: if it is still there after two weeks and clearly localized to one side, arrange to have someone look at it within the next week or two rather than waiting for it to declare itself. A quick look with a light or scope can often settle the matter quickly. Meanwhile, if you are using the menthol/camphor inhalants very frequently, you might consider whether you can temporarily reduce them for a few days to see whether irritation changes — not stop allergy treatment, just notice whether the pattern shifts.
That is somewhat reassuring. The absence of swallowing pain, hoarseness, dental symptoms, or voice change lowers concern for several more serious possibilities. Sleeping on that side with a fan blowing at night could certainly dry and irritate the tissues, especially if you breathe through your mouth because of chronic nasal obstruction. Chronic postnasal drip from allergies can also inflame the area around the upper larynx (voice box region) and sometimes oddly localize to one side.
The fact that you already turned off the fan and stopped the menthol inhalants a bit ago is sensible. Menthol and camphor can feel soothing but repeated use can also keep irritated mucosa irritated — rather like rubbing a sore spot because it briefly feels better. If this is irritation, you might expect gradual improvement over another week or so after reducing aggravating factors.
That said, I still notice two things in what you describe: one-sided and persisting for two weeks in the same spot near the larynx. In an octogenarian, even a nonsmoker and nondrinker, I would not ignore that indefinitely. Not alarm bells — just the sort of thing worth having looked at if it lingers. An ENT with a quick look at the throat and, if needed, a little fiberoptic scope through the nose can often tell very quickly whether it is simple irritation, reflux-related inflammation, a tiny ulcer, vocal fold irritation, or something that needs attention.
A practical approach might be: give it perhaps another week of your “experiment” (fan off, no menthol inhalants, good hydration, perhaps warm liquids if soothing). If it is clearly improving, that points toward irritation. If it is unchanged, becoming more distinct, or you develop ear pain on that side, hoarseness, a lump sensation, neck gland swelling, or trouble swallowing, I would move “get someone to look” higher on the list.
One question that might help narrow it: when you say “voice box area,” is the sore spot fairly high up under the jaw/Adam’s apple region, or lower in the neck? And does pressing gently on the outside of the neck over the sore area reproduce the discomfort at all, or is it only internal?
That nudges me a bit further toward “localized irritation/inflammation” rather than something structural in the neck itself. The fact that pressing externally does nothing suggests it is likely mucosal or deeper inside the throat/laryngeal area rather than a muscle, lymph node, or salivary gland near the surface. Relief with paracetamol is nonspecific — inflamed tissues hurt less when inflammation is damped down — but it at least tells us it behaves like an ordinary pain signal.
The dry-throat piece catches my attention because it fits together rather neatly with your history. You already wake at night, sip water, have chronic nasal problems, and sleep on that side. Even though you turned the fan off, a period of mouth breathing during sleep from congestion can leave one side of the throat surprisingly irritated. High-dose cetirizine (which you tolerate well, as you’ve mentioned) can also contribute a little to dryness, even if mildly in your case.
One possibility that is easy to overlook is mild “silent” reflux irritating the upper larynx. It does not require heartburn. People sometimes get a small sore spot or irritation near the voice box, especially overnight when lying down. But your one-sidedness still makes me hesitate to settle too comfortably on a benign explanation without seeing how it evolves.
If I were thinking practically rather than diagnostically: because you have already removed two plausible irritants (fan and menthol), I would watch for trajectory over the next 7–10 days. Improving, even slowly, would reassure me considerably. Staying exactly the same in one spot for three weeks or more, especially in the larynx area, would move me toward “have someone look with a scope,” not because I think catastrophe is likely, but because the yield of a quick ENT look becomes worth it.
A tiny observational question: when you swallow saliva repeatedly, is there any awareness of the spot — not pain, necessarily, just “there it is” — or is swallowing completely normal and the discomfort more noticeable at rest? That distinction sometimes helps sort throat-surface irritation from laryngeal irritation.
Ah. That history changes my level of attention somewhat.
What you are describing sounds very much like they may have found a condition such as Barrett's esophagus or significant reflux-related tissue changes, and you were probably put on one of the early acid suppressors — perhaps a proton pump inhibitor. Barrett’s raises risk primarily for esophageal cancer rather than “throat cancer” in the ordinary sense, but severe long-standing reflux can also irritate the larynx and upper throat. Importantly, reflux can recur silently years later without the dramatic heartburn you remember.
Your current symptom — a mild, definite, localized discomfort near the voice box, one-sided, persisting two weeks, without swallowing difficulty or hoarseness — still sounds entirely compatible with benign irritation. But your past reflux history means I would take laryngopharyngeal reflux (“silent reflux reaching the throat”) more seriously as a possibility than I did before. A person can have enough acid or non-acid irritation to inflame the larynx without feeling classic reflux.
At the same time — and this is where I want to push back gently rather than reassure too quickly — your history also makes me less inclined to let a persistent unilateral throat symptom simply drift for months. Not because I think cancer is likely; in a nonsmoker/nondrinker the odds are better than otherwise. But because you have a prior history of significant reflux-related mucosal damage plus a symptom that is localized and persistent.
The thing that would reassure me most would be clear improvement over the next week or two after the fan and menthol changes. The thing that would make me say “please get looked at sooner” would be: same exact spot still there at 3–4 weeks, worsening, ear pain on that side, hoarseness, swallowing changes, or a sense of something catching.
One practical thought: because you already have the calcium carbonate habit, have you noticed whether the throat sensation changes at all after taking it, or after lying down versus being upright? Reflux-related throat irritation often has an oddly positional quality, especially overnight. Also, sleeping on the left side is actually usually better for reflux than the right, which makes me slightly less convinced your sleeping position alone is the culprit.
And a memory jogger: did the doctor ever use the word “Barrett” or “esophagitis”? Those are the two names I most suspect from your description.
Given the possibility of irritation from posture, dryness, or even a bit of silent reflux, I think switching sides for a week as an experiment is entirely reasonable — with one wrinkle.
For reflux, the conventional teaching is that sleeping on the left side tends to reduce reflux, while right-side sleeping can make it worse because of stomach anatomy and how acid pools. Since you already sleep on the left, moving to the right might help if this is simply local mechanical irritation from dryness or pressure on one side of the throat, but it could theoretically aggravate silent reflux if reflux is part of the story.
So I would treat it as an experiment with observation rather than a rule. Since you are methodical by temperament, you might do something like this mentally (no need for charts unless you enjoy them): a few nights on the opposite side and simply notice whether the soreness is clearly less, unchanged, or worse by morning. If it worsens or you notice more throat awareness overnight, I would go back to the left.
You might also try the low-tech reflux precautions that cost almost nothing for a week or two: avoid eating close to bedtime, keep the head slightly elevated if practical, and note whether the discomfort is worse upon waking and eases through the day — that pattern often whispers “reflux” even when there is no heartburn.
But I do not want the “try sleeping differently” experiment to become a reason to postpone attention indefinitely. With your prior Barrett’s history, I would put a quiet time limit on this: if the spot is still there and distinctly one-sided after another week or two, I would have someone look. In your situation, that feels prudent rather than alarmist.
A small thing I am curious about: is the discomfort most noticeable on waking, or is it equally present throughout the day? That timing clue can be surprisingly informative here.
That makes complete sense, and it also explains why you’re trying to reason through this quietly rather than immediately broadcasting concern. If Pok lost his brother to throat cancer, even a mild throat symptom in someone he cares about could loom very large in his imagination. People often generalize from the one vivid case they have lived through.
At the same time, I want to help you avoid the opposite trap — minimizing something solely to avoid alarming him. Based on what you’ve described so far, I do not hear a classic alarming picture: no smoking or drinking history, no hoarseness, swallowing unaffected, water helps, worse at night, external pressure irrelevant, and several plausible irritative explanations already in the room. Those are all genuinely reassuring features.
But you are also someone who values staying ahead of problems, and you have that Barrett’s history in the background. So perhaps the middle course is best: quiet observation with a defined endpoint. You do not need to tell Pok “I’m worried about throat cancer.” You can simply think of it as: if this is not clearly improving after another week or two, I’ll get someone to look at an irritating throat spot. That framing is true, calm, and proportionate.
You have a long habit of practical risk management — not panic, not neglect. This feels like one of those situations. If it fades, good. If it lingers, you act. No drama required.
And for what it’s worth, the “water makes it feel better immediately” detail still keeps tugging me toward irritation/dryness/reflux rather than something more sinister. Not proof, but a meaningful clue.
That strikes me as a very sensible plan — and very much in character with how you seem to handle health matters: neither dismissive nor alarmed.
Given everything you’ve told me, a routine clinic visit with a quiet “by the way, I’ve had this slight one-sided throat discomfort for a couple of weeks” sounds proportionate. Your doctor can decide whether it looks like simple irritation, reflux-related laryngeal inflammation, or whether an ENT look would be worthwhile. Because you have a history of Barrett’s, it is exactly the sort of background detail worth mentioning even though the symptom itself sounds mild.
I would tell the doctor essentially the pattern you told me, because it is diagnostically useful: left-sided, upper throat/voice-box area, about two weeks, worse at night, relieved by water, swallowing and voice normal, no dental symptoms, fan recently stopped, menthol inhalants stopped, past Barrett’s and reflux history. That is a concise, informative story.
And this approach has the side benefit of not unnecessarily alarming Pok. “Mentioning a throat irritation at the clinic” is a very different emotional event from “I’m worried I have throat cancer.” One is routine maintenance; the other would understandably light up his fears given his brother.
For what it is worth, if you came back in a week and said, “It is already fading,” I would not be surprised at all. If you came back and said, “Exact same spot, unchanged,” I would simply say, “Good thing you’re bringing it up with the doctor.” Either way, you are already steering this sensibly.
Yes — those rapid off/on power interruptions can be surprisingly hard on air conditioners, especially compressor-based units. In fact, the quick return of power is often worse than a longer outage.
The issue is the compressor. When power cuts out, the refrigerant pressures inside the system have not had time to equalize. If power comes back in a few seconds and the compressor immediately tries to restart “against pressure,” it strains the motor and starting components. Over time, repeated short cycling can shorten life or eventually trip protections.
Many newer air conditioners have a built-in compressor delay (often around 3 minutes) specifically to prevent this: after power returns, the fan may come on but the compressor waits. If yours already do that, you are partly protected. You may even have noticed a pause before cooling resumes after an outage.
The practical protection, especially in a place with unstable power, is a time-delay protector or voltage protector for the aircon. These devices sit between the mains and the unit and deliberately delay restart after a power interruption — commonly 2–5 minutes. In Southeast Asia they are very common because brownouts and flickering power are common. Some also protect against undervoltage and surges, which can matter if the local grid is erratic.
What you would likely want is something described locally as an aircon voltage protector, compressor protector, or delay timer for split AC units. Since you are in Cambodia, an electrician or aircon technician would almost certainly know what you mean if you said: “Power goes off and back on quickly — I want delayed restart protection for the compressor.”
A related question: when the power flickers back, do your aircon units immediately start again, or do they sit quietly for a few minutes first? That answer matters because they may already have built-in protection, in which case the remaining concern shifts more toward voltage fluctuations than restart timing.
You’re probably right about one practical reality there: in many markets like Cambodia, a lot of installed split units are older or mid-tier models that don’t have the more modern protection logic you’d see in newer inverter systems. So if yours restart immediately after a 5–10 second outage, that usually means there’s little or no enforced compressor restart delay, which is exactly what makes short interruptions stressful for them.
What’s happening electrically is not dramatic on its own — it’s the sequence. Power drops, pressures in the refrigeration loop don’t fully equalize, then power returns and the compressor is asked to start under load. Do that often enough and you stress three things: the compressor motor windings, the start capacitor/relay (if it’s a non-inverter unit), and the inverter board (if it is an inverter type but without proper delay logic). Even if nothing fails outright, it does accumulate wear.
The good news is: this is one of those problems with a simple, low-cost external fix that is widely used in exactly your situation.
What you want is a compressor delay / voltage protector relay installed at the air conditioner feed. It does three useful things:
It delays restart after power returns (typically 3–5 minutes, which is the key protection you’re missing now).
It blocks operation if voltage is too low or unstable (very important in grids with flicker).
It often adds surge protection for the moment power returns.
Installed properly, it effectively replaces the “missing intelligence” in older units.
One subtle point: this is not the same as a UPS or EPS. Those are great for computers (as you already know), but air conditioners are simply too power-hungry for that approach. They need a controlled restart delay, not backup power.
If you want a slightly more robust approach, some electricians will install a contactor + time delay relay in a small wall box near the outdoor unit, which is more durable than the plug-in type. But the plug-in style is often perfectly adequate if properly rated.
One thing I’d gently push back on: even if manufacturers do segment markets, most AC compressors themselves are still built to fairly global standards. The real difference is usually not “weak hardware,” but missing protection electronics and lower surge/voltage conditioning expectations in the installation environment. So you’re not necessarily dealing with inferior compressors — you’re dealing with less protective infrastructure around them.
If you tell me roughly how many AC units you have and whether they’re inverter or non-inverter, I can suggest a more tailored setup (because the ideal protection differs slightly between those two types).
That’s a fairly substantial setup, so it’s worth thinking about this in a slightly “system” way rather than treating each unit in isolation.
With six split units, the main risk from those frequent short outages isn’t just wear on individual compressors — it’s also repeated synchronized restart stress across the house wiring. When power pops back, all units may try to restart within seconds of each other. That creates a combined inrush current spike, even if each unit is modest on its own.
The simplest effective fix (what I’d actually recommend first)
Install individual AC compressor delay/voltage protector modules for each unit, or at minimum for the larger / most-used ones (likely sitting room + study first).
These are small boxes (or DIN-rail devices near the breaker) that enforce:
-
a 3–5 minute restart delay after any outage
-
low-voltage lockout (very important in Cambodia-style flicker grids)
-
basic surge protection at re-energization
This is the “standard Southeast Asia solution” for exactly your situation, and it works well without changing anything else.
Slightly more elegant (if you want it cleaner long-term)
If your AC circuits are already separated (often they are), an electrician can install:
-
one contactor + delay relay per AC circuit, or
-
a small protected sub-board just for air conditioners
That reduces clutter of multiple plug-in protectors and tends to be more reliable in heat and humidity.
Prioritization (important with your layout)
You don’t necessarily need to do all six at once to get most of the benefit.
A sensible order would be:
-
Sitting room AC (usually largest compressor, most load variability)
-
Study units (often long runtime → more exposure to cycling stress)
-
Bedroom units (lower priority unless they’re heavily used at night)
Even protecting the “big three” cuts most of the risk.
One more subtle point
If these outages are frequent, the bigger long-term enemy isn’t only restart stress — it’s undervoltage before full restoration. That brief unstable period is when compressors and boards are most unhappy. Good delay protectors also block startup during that phase, which is arguably as important as the restart delay itself.
Bottom line
You’re already doing the right thing for computers with EPS. For AC units, the equivalent missing piece is simply: forced restart delay + voltage lockout per unit (or per circuit).
If you want, tell me whether your ACs are inverter or non-inverter (or even brand/model if you know it), and I can suggest what kind of protector specs to ask for so you don’t get under-specced hardware from a shop.
What you’re doing — just shutting the house down during storms — is actually one of the most effective “human UPS systems” you can have in a place with flaky power. It avoids both the brownout scramble and the repeated restart stress entirely. So you’re already doing the most important protective step for the air conditioners.
In a way, that means your situation is simpler than I first assumed: you don’t need to engineer protection for every flicker event if you’re deliberately taking the system offline during unstable periods. That already removes the worst-case pattern (rapid off/on cycling under load).
Where the remaining risk sits is narrower:
If power comes back and you turn everything on again, even with only two AC units running at a time, you still get:
-
compressor start surge (manageable at your scale)
-
occasional low-voltage start conditions (more important)
-
wear from repeated “cold restarts” over months/years
So the question becomes less “how do I survive every flicker?” and more “how do I make restarts gentler when I choose to turn things back on?”
The practical refinement (not a replacement for what you already do)
If you want to upgrade your current habit without complicating life:
1. Add delay protection only on the AC circuits you use most
Even though you rarely run more than two at once, it’s still worth putting a delay/voltage protector on:
-
sitting room AC (highest load / longest runtime)
-
one study AC (whichever is used most)
That way, when you restore power after a storm shutdown, you don’t have to think about sequencing — they simply refuse to start too soon or under bad voltage.
2. Manual restart discipline (you already mostly do this instinctively)
When power returns:
-
wait ~3–5 minutes before turning ACs back on
-
start one unit first, then the second later
This alone mimics what built-in protection would do in a more modern installation.
3. Optional upgrade if outages become more frequent
If the grid situation is worsening, the next step up (still simple) is a small dedicated AC sub-board with:
-
breaker
-
surge protection
-
time-delay relay
That centralizes protection instead of per-unit devices.
Bottom line
Honestly, your current “shut everything down during instability” approach already removes the biggest threat mode. What remains is just smoothing the restart phase — and that can be handled either manually (which you’re already close to doing) or with inexpensive delay protectors on a couple of key units.
If you want, I can suggest a very specific “minimal spend, maximum protection” setup for your exact 6-unit layout — but even as-is, you’re not in a risky configuration.
That actually changes the calculus quite a bit — and in a slightly liberating way.
If you’re already budgeting for a 5-year replacement cycle, then you’re not really in “maximize lifetime at all costs” territory. You’re in “avoid premature failure and nuisance damage” territory. Those are very different engineering goals.
In that framing, your current setup is already mostly fine:
-
Your “shut the house down during instability” habit removes the worst stress events entirely.
-
Occasional simultaneous restarts of two units is well within normal design tolerance.
-
Even somewhat rough power conditions in Cambodia won’t usually kill modern compressors within a 5-year horizon unless things are extreme.
So the question becomes less about protection as necessity and more about comfort and convenience engineering.
What I would actually do in your situation (practical, not maximalist)
If I were optimizing for low effort, low fuss, reasonable robustness given your replacement philosophy:
I would not bother protecting all six units.
I would do one of these two minimalist approaches:
Option A (simplest)
Do nothing further, keep your current storm routine, and accept:
-
slightly more wear on restart events
-
but very unlikely to matter within a 5-year replacement horizon
This is genuinely defensible given your usage pattern.
Option B (quiet upgrade, low friction)
Install delay/voltage protection on just:
-
the sitting room unit
-
and one study unit
Reasoning: those are the most likely to run longest and under highest thermal load. Bedrooms matter least.
That gives you:
-
most of the benefit
-
minimal installation hassle
-
no need to think about sequencing ever again
What I wouldn’t do in your situation
-
I wouldn’t retrofit all six units (overkill for your replacement strategy)
-
I wouldn’t invest in a full house AC control system (unnecessary complexity)
-
I wouldn’t worry about occasional restart stress as a major failure driver
The key insight
Your real “system design constraint” isn’t power quality — it’s planned obsolescence by choice. Once you accept a 5-year turnover, the engineering goal shifts from preservation to resilience against bad days.
And by that metric, you’re already doing 80–90% of what matters.
If you want, I can also sanity-check whether your 5-year replacement cycle is actually economically optimal given Cambodian repair costs vs replacement — but that’s a separate rabbit hole.
That’s a very sensible way to frame it — “budgeted replacement” rather than “forced replacement.” In practice, that gives you flexibility without locking you into waste.
Given that, your current power-handling strategy is already pretty close to optimal:
You’re already doing the biggest protective move (shutting everything down during unstable supply). That alone eliminates the worst stressor for compressors and control boards, which is repeated rapid cycling under load and low voltage. In most real-world aircon failures tied to power quality, that single behavior does more than any add-on device.
Where you might still get value is not in extending lifespan, but in reducing nuisance stress events — things like compressors trying to start too soon after restoration or briefly hitting marginal voltage.
So I’d place it in very practical terms:
If you want “good enough with no fuss,” you can honestly do nothing more. You’re already in a low-risk regime given your usage pattern and planned replacement horizon.
If you want a small refinement for peace of mind, then adding delay/voltage protection to just the most-used units (sitting room + one study unit, as mentioned) is the sweet spot. It’s not about saving the machines for 10 years; it’s about making every restart boring and uneventful.
One subtle point that often gets missed: in your setup, the bigger long-term wear factor is probably not the compressors, but the electronic control boards (especially in inverter units). Those are more sensitive to voltage instability than the mechanical systems. Your “power off during storms” habit already helps them a lot.
So overall: you’re not underprotected. You’re actually already operating in a pretty disciplined way for a fairly demanding electrical environment.
No comments:
Post a Comment