Skin Signs of Shellfish Allergy: Itching, Redness and Hives
The skin is often the first place a reaction shows up, and it can also be an important clue to how serious the reaction is.
Common skin signs
- Redness and itching around the mouth and on the face, starting while eating
- Hives: raised red patches with clear edges and strong itching, which can appear in groups
- Local or widespread swelling, often on the eyelids and lips
- Worsening of existing eczema, with oozing or scratch marks
Care points
Stop eating and rinse the mouth with water; avoid scratching and avoid washing with hot water, and use a cold compress to ease itching; wear loose cotton clothing to reduce rubbing; do not apply anti-itch products of unknown ingredients on your own.
When to see a doctor
Call 120 (the emergency number in China) straight away if any of these happen: difficulty breathing or wheezing, a tight throat, a hoarse voice, swelling of the tongue or throat, repeated vomiting, marked dizziness or reduced alertness. Even if there are only local skin symptoms, it is still best to see a doctor for assessment, to find out the trigger and to learn what to do next. It is not advised to simply rely on topical medicines and push through.
This article is for general information only and is not medical advice. Please follow your doctor's instructions.
This article is for general information only and is not medical advice. If your symptoms affect daily life, please see a doctor.