What should you know about skin writing?

The marks follow the path of contact, may swell within minutes, and usually settle without leaving a scar. Tight clothing, rough towels, heat, friction, and scratching can make episodes easier to trigger. The reaction reflects release of inflammatory chemicals in the skin; it is not ink beneath the surface. A clinician can often identify the pattern from your history and examination. Mention whether swelling affects the lips, eyelids, or tongue, and whether symptoms occur without touch.

Use a gentle cleanser and fragrance-free moisturiser, choose loose soft clothing, and pat rather than rub after washing. Keep nails short and use a cool compress when itching starts. Record triggers, timing, and any new medicines or infections. If symptoms interfere with sleep or daily activities, a clinician may discuss [Antihistamine Treatment](/treatments/medical-dermatology/oral-antihistamine-therapy/). Follow the recommended dose and check before combining products.

Arrange an appointment if the welts are frequent, last longer than expected, occur without pressure, or come with persistent swelling or another unexplained symptom. Seek emergency help for difficulty breathing, throat or tongue swelling, faintness, or rapidly spreading swelling. Get prompt advice if a new medicine precedes widespread hives or if the skin becomes painful, blistered, or infected-looking.

Ask whether the pattern fits dermatographism, which triggers to avoid, whether another hive disorder should be considered, and how to use symptom relief safely.