Itchy lips are also swollen, there may be hives, insect bite dermatitis, drug rash, contact dermatitis and other causes.
1. urticaria: is the skin mucous membrane temporary vascular permeability increase caused by limited edema, lip edema may be huge urticaria, will lead to itchy lips also swollen.
2. insect bite dermatitis: lips by mosquito bites, toxin stimulation may cause insect bite dermatitis, resulting in itchy lips also swollen.
3. Drug rash: local medication or systemic medication caused by drug allergic reactions, can also lead to itchy lips also swollen.
4. Contact dermatitis: contact dermatitis caused by contact with lipstick, cosmetics and skin care products can also lead to itchy lips and swollen.
Lips itchy and swollen, there may be other reasons, need to go to the hospital to check the cause.