Dr Sermed Mezher, a GP in the UK, explained how a certain feeling in the cold months could be a sign of a potentially life-threatening condition
A GP is warning that a common symptom that many experience during the cold weather could be a sign of a serious health condition.
Not everyone experiences the unusual sensation, but for some, it’s a regular occurrence during the winter months. Stepping out into the cold can trigger a bizarre itch.
You might have noticed it on your legs if you’re not bundled up in thick trousers to ward off the chill, but it can affect any part of the body. And according to Dr Sermed Mezher, this could be an indication of a health condition that, although rare, could be life-threatening.
If you feel like you’ve “walked through a field of nettles” after being exposed to the cold, you may have cold-induced urticaria. Scientists are still unsure why some people develop this condition and others don’t, but its effects can range from “an annoyance all the way up to a life-threatening reaction”.
What is cold-induced urticaria?
The NHS explains that urticaria is another term for hives, reports Surrey Live. The primary symptom of hives is a rash that can be raised or itchy, and its appearance can change within 24 hours.
Dr Mezher has shed light on cold-induced urticaria, a condition where hives are triggered by exposure to cold elements like water and wind, likening it to an allergic reaction. He explained: “The process that mediates this is exactly the same as allergies, where you have a trigger that causes cells in your skin called mast cells to come to the area and start releasing this chemical called histamine.
“This increases blood flow to the area and causes swelling and these hives.” To diagnose cold-induced urticaria, Dr Mezher suggests a simple “ice cube test” in a “controlled environment”, which involves placing ice against the skin to observe any reactions.
He warned that for some, the response could be extreme, potentially leading to “full-blown anaphylaxis” and life-threatening throat swelling, similar to severe allergies.
Treatment for cold-induced urticaria
For those suffering from this condition, Dr Mezher advises avoiding cold exposure, taking antihistamines regularly, and carrying an EpiPen for emergencies, especially if their case is particularly serious.
When to see a GP or call 999
According to the NHS Inform website, most hives improve within a few days without treatment. However, if your rash is more severe, a GP may prescribe steroid tablets, antihistamines, or menthol creams to alleviate itchiness.
You should see a GP if:
- the symptoms don’t improve after 2 days
- you’re worried about your child’s hives
- the rash is spreading
- the symptoms are severe
- hives keep coming back (you may be allergic to something)
- you also have a high temperature and feel unwell
- you also have swelling under your skin (this might be angioedema)
- the symptoms cause distress
- the symptoms disrupt daily activities.
In some instances, an allergic reaction can be life-threatening,. You should call 999 or visit AandE immediately if you have the following symptoms:
- swelling in your mouth, eyes, face, lips, tongue, throat, feet or hands
- wheezing
- lightheadedness or feeling faint
- tightness in your chest or throat
- trouble breathing or talking
- abdominal pain, nausea and vomiting.
For more information about hives, visit the NHS website.
