Sudden lip swelling is considered to be related to trauma, may also be the emergence of allergic dermatitis, lipitis and other diseases.
1. Trauma, if the usual life often do not pay attention to personal lip care, by external impact or bite the lips may lead to tissue fluid leakage, so there will be a sudden lip swelling symptoms.
2. Allergic dermatitis, patients with atopic dermatitis skin allergen stimulation may lead to allergic changes in the skin, lip swelling symptoms, but also may be accompanied by itching and other reactions.
3. Lipitis, if the patient has lipitis, the lips are stimulated by pathogens, inflammatory secretions into the lips, may lead to such symptoms.
Usually need to pay more attention to changes in the situation, if there are abnormalities need to actively seek medical attention.