I caught a cold two weeks ago. The fever
For reference only. Not medical advice.
Question
I caught a cold two weeks ago. The fever and runny nose are gone, but I've been left with an annoying dry, tickly cough for the past 8 days. It gets much worse at night when I lie down, with an itchy throat.
A friend told me to boil fresh pears with rock sugar to "moisten the lungs", but my mother told me to drink hot ginger tea to "dispel cold".
From a TCM food therapy perspective, how do pear and ginger differ for a post-cold cough? Which one should I cook tonight, and what is the single key sign to tell if my cough is wind-cold or lung-dryness/heat?
Answer
A dry, tickly cough that drags on after the fever and runny nose are gone — with an itchy throat and worse lying down at night — reads as lung-dryness / 津伤 (residual heat drying the lung fluids), not wind-cold. Tonight: cook the pear. Leave the ginger on the shelf for another day.
Pear vs ginger for a post-cold cough
| Pear (梨) | Ginger (生姜) | |
|---|---|---|
| Library entry | 随息居饮食谱·梨 | 随息居饮食谱·姜 |
| Nature / flavor | 甘凉 | 辛热 |
| Direction | 润肺凉心，化痰已嗽，养阴濡燥 | 散风寒，温中，去痰湿 |
| Best fit | 干咳、咽干、燥热 | 风寒外感初起、痰白清稀 |
| Library 忌 | 中虚寒泻、乳妇、金疮忌之 | 内热阴虚、喉患、血证、疮疡、暑热时疟、热哮火喘均忌之 |
Both are quoted from this turn's `lookup_food.py` output (本草纲目·果之二·梨; 随息居饮食谱·梨 / 姜). Ginger's own line says it is 忌 when the picture is 内热阴虚 — that is exactly what your dry, itchy, night-worse cough looks like. Pear's line — "甘涼潤肺...化痰已嗽...養陰濡燥" — is the direction that fits.
How to cook it tonight
Steam or simmer one fresh pear until soft, eat it warm. A small amount of rock sugar is fine as a flavor carrier; the pear itself is the active part. Skip the ice-cold fruit salad — cold makes the 燥 worse, not better.
The single key sign — 痰的色质 (sputum color & consistency)
This is the one sign that splits wind-cold from lung-dryness/heat on a post-viral cough:
- 痰白清稀，量多易咯 → 风寒 (cold). Ginger territory, but only if you also have aversion to cold, body aches, no thirst.
- 痰少干咳、咽干、干痒，咳不出 → 肺燥 (dryness). Pear territory. This matches you.
- 痰黄稠、黏、难咯 → 肺热 (heat). Pear still fits, but this is clinician territory — see "stop-now" below.
A side test you can do tonight: stick out your tongue in natural light. A thin white coat leans wind-cold; a red tongue with little or no coat leans dryness/heat. Tongue reading isn't a remote diagnosis, but the coat colour won't lie.
Stop-now signs — leave the kitchen, get help
These belong to the state you're in, so name them now rather than wait for them to show up:
- 胸痛、喘不过气、一侧肢体无力或麻木、神志改变、头晕近晕厥 → `family-doctor` and local emergency right now. Don't keep cooking pears.
- 痰中带血、咯血、突然大量脓痰 → `family-doctor` and emergency now.
- 发热重新起来（>38°C）、咳嗽一周以上无好转反而加重、咳到夜间不能平卧或呕吐 → see a clinician within 24 hours.
Take to a licensed TCM practitioner
- Cough timeline: started 2 weeks ago after a cold, fever/running nose cleared, dry tickly cough for 8 days, worse lying down at night, itchy throat.
- Any sputum at all? — colour and consistency.
- Tongue photo (natural light, no food/drink in the last hour).
- The pear-vs-ginger question you came in with, plus any other Western medicine or supplement you're taking.
Limits
I haven't seen your tongue or felt your pulse, and the textbook gram count for any pear-and-rock-sugar formula doesn't get translated into a home dose — that's the prescriber's call. If the pear routine doesn't ease things in 3–5 days, or sputum turns yellow/thick, or any of the stop-now signs above appears, the picture has moved out of home food therapy and a visit is the next step.