Urticaria (hives) is usually related to an abnormal immune response in the body. The specific triggers are varied, and it is recommended to promptly investigate the cause and consult a doctor. The following are some common triggers:
1. **Food or drug effects**
Some people may experience skin allergies, such as hives and itching, after consuming seafood, nuts, or using certain medications.
2. **External environmental stimuli**
Contact with pollen, dust mites, or other substances, or exposure to physical factors such as temperature changes or sunlight, can also irritate the skin and cause similar symptoms.
3. **Infection or internal factors**
When you have a cold, are tired, or are under emotional stress, your body's resistance may decrease, which can trigger or worsen skin problems.
If recurrent episodes occur, keep a record of your daily diet, contact with allergens, and changes in symptoms to help your doctor determine the cause. Keep your skin clean, wear loose clothing, and avoid scratching. If symptoms persist, please seek medical attention promptly for targeted examination and treatment.
