Urticaria flare-ups are usually related to allergic reactions, physical irritants, or internal bodily changes, and the specific causes vary from person to person. It is recommended to keep a record of the environment, diet, and physical condition during an flare-up, as this can help identify the triggers.
1. **Common allergens:** Some people experience skin rashes and itching due to an overreaction of the immune system after contact with pollen, dust mites, or consumption of seafood, nuts, or other foods.
2. **Physical Stimuli**: External stimuli such as pressure on the skin, changes in temperature, sun exposure, or friction may directly lead to capillary dilation and the formation of local rashes.
3. **Internal State Related**: Infections, emotional stress, fatigue, or hormonal fluctuations may affect bodily functions, temporarily increasing skin sensitivity and thus triggering symptoms.
If symptoms recur, try avoiding recently introduced foods or substances, and wear loose clothing to reduce friction. Get plenty of rest and maintain a relaxed mood. If the rash spreads or is accompanied by breathing difficulties, seek medical attention promptly.
