2. Generally speaking, urticaria is caused by the following reasons: (1) allergic to allergens (this is the most important-including drugs, food, external environmental contact, etc. ); (2) Acute infectious diseases (such as acute tonsillitis and infection caused by trauma). ) or chronic inflammation (such as dental caries, gynecological chronic inflammation, etc. ); (3) organic diseases
# Urticaria # Allergy # Allergen # Medicine # Food # Environment # Infection # Tonsillitis # Trauma # Chronic inflammation # Dental caries # Gynecological inflammation # Organic diseases