The boundary, stated once
This publication describes the physics of a structure and the loads applied to it. It does not diagnose, it does not treat, and it will not tell you what a rash is.
That is not caution for its own sake. It is because the presentations that outdoor people bring to a search engine, dry cracking hands, a flaking scalp, a rash under a seam, redness after cold, are also the presentations of several conditions that require assessment. A website cannot tell them apart and neither can you.
What a website can usefully do is describe what is inside the ordinary environmental picture, so that you can recognise when something is outside it.
What is inside the ordinary picture
Skin that is tight after washing. Skin that stings when something is applied that used to feel like nothing. A rough or matte feel. Fine flaking on exposed sites a few days after a hard session. A small split at a knuckle in January. A mark that follows the outline of a seam and settles over a week. Redness and warmth for an hour or two on rewarming.
All of that is dryness and mechanical wear, and all of it responds to reduced load over one to three weeks. That is the material this publication is for.
What is outside it
The list below is a list of reasons to be seen. It is not a list of things to look up, and we are deliberately not describing what any of them might indicate.
Broken skin that is not closing over a couple of weeks of avoiding whatever opened it.
Anything weeping, crusting or discharging.
Increasing redness, heat, swelling or pain, particularly if it is spreading, and particularly with fever or feeling unwell. That is same day.
Blistering.
Itch that disturbs sleep, or itch that is out of proportion to what you can see.
A rash that spreads beyond a contact area, or that appears after short exposures rather than long ones.
Raised itchy weals after cold exposure. This one matters particularly for cold water swimmers and is discussed in the article on cold responses.
Colour change in fingers or toes that persists after rewarming, or that is one sided, painful or new.
Persistent numbness after cold exposure.
Anything that recurs in the same place across seasons, or a single spot that changes, thickens, scales, bleeds or does not heal.
Anything that is not responding to a fortnight of genuinely reduced load. Not responding is information.
Any systemic symptom at all in connection with a skin problem: faintness, breathing difficulty, swelling of lips, tongue or throat, or feeling generally unwell. That is 999.
Why the pharmacist first
Community pharmacy is underused for skin. Pharmacists are trained healthcare professionals, they see a great deal of skin, they need no appointment, and in England there are arrangements through which pharmacies can assess and manage a defined set of common conditions and refer onward when needed.
For a cracked hand, a dry scalp, a persistent chapped lip or a rash that has not settled, a pharmacist is the appropriate first stop and will tell you whether you need a GP. Going there costs you nothing and often saves a fortnight.
When to go straight to a GP
Go directly to a GP if a pharmacist has advised it, if the problem is severe, if it recurs across seasons, if it is affecting your sleep or your ability to work, if you suspect it is related to your job, or if there is anything on the outside list above other than the emergency items.
How to register with a GP surgery is set out on the NHS website, and you do not need proof of address or immigration status to register in England.
| Situation | Where | How soon |
|---|---|---|
| Dry, tight, rough, flaking after cold exposure | Nowhere. Reduce the load | Review in two weeks |
| A cracked hand, a chapped lip, a flaking scalp | Community pharmacy | When convenient, no appointment needed |
| Not improving after a fortnight of reduced load | Pharmacy, then GP | Within a week or two |
| Recurring in the same place across seasons | GP | Book it |
| Weals after cold exposure | GP, and before the next cold season | Promptly |
| Weeping, crusting, spreading, hot, swollen, feverish | GP or urgent care | Same day |
| Faintness, breathing difficulty, swelling beyond the area | 999 | Immediately |
Ordering framework written by this publication from general skin physiology. It is not a measurement, it is not taken from any study, and no number in it is a reading.
How to make the appointment count
This is the practical part and it is worth more than it sounds.
Take a history rather than a theory. What appears, where exactly, when it started, what it follows, what makes it better, what makes it worse, and what you have already changed.
Take photographs. Skin problems have a habit of settling on the day of the appointment, and a photograph taken at its worst is genuinely useful clinical information.
Say what you do. Cold water immersion four times a week, hours in a wetsuit, frequent hand washing at work, contact with cleaning products, cement, fish, oils or solvents. Any of those changes the picture, and occupational causes change what should happen next.
Say what you have already tried and for how long. A fortnight of genuinely reduced load with no improvement is a useful clinical fact.
Do not take a list of ingredients you read about. Take the problem.
If it might be work
If your hands are the problem and your work involves frequent wetting, washing, gloves or contact with materials, say so explicitly. Work related skin problems are treated in Britain as an occupational health matter with employer duties attached, and the Health and Safety Executive publishes guidance on preventing them. There is more in the article on occupational skin.
And what we will keep doing
We will keep describing mechanisms, because understanding what a cold wind does to a structure is genuinely useful and nobody else writes it down for people who are outdoors by choice.
We will keep refusing to interpret a rash, to name a condition, to suggest a treatment or to tell you that your symptoms are probably nothing. Probably nothing is a phrase for people who have looked at you.