Skin redness and itching are mostly associated with conditions such as contact dermatitis, urticaria, and insect bite dermatitis.
1. Contact dermatitis: contact dermatitis is mainly caused by contact with hair dyes, metal products and other exogenous substances and skin inflammation, the scope of skin lesions is usually the same as the size of the contact object.
Mild edema in mild cases, severe cases will appear obvious erythema and swelling, but also may have pimples, vesicles, oozing, itching, etc., so the skin redness and itching may be contact dermatitis.
2. Urticaria: patients with urticaria can appear suddenly itchy skin, itchy parts can appear in different sizes of red masses, the local skin can have edema, so the redness and itching of the skin may also be urticaria.
3. Insect bite dermatitis: insect bite dermatitis is mainly caused by mosquitoes, fleas and other insects bite skin allergies and inflammatory reactions, mostly occurring in the exposed parts of the skin, redness, swelling, bruises, bumps, pimples, ecchymosis and other symptoms, often accompanied by intense itching, which can lead to redness and itching of the skin.
It is recommended that patients with red, swollen and itchy skin should consult a doctor in a timely manner to find out the cause of the disease and then actively treat it, so as not to delay the condition.