Symmetrical erythematous rash on the limbs should be treated according to the cause of the disease, such as general treatment, drug treatment, etc. The common causes include eczema, urticaria, psoriasis and so on.
1. Eczema: its treatment is mainly the local application of glucocorticoid drugs, such as hydrocortisone, dexamethasone and so on. If the itching is severe, antihistamines, such as loratadine, can be used.
2. Urticaria: Anti-allergic and symptomatic treatment should be carried out after removing the cause. Avoid contact with cold, heat and other physical factors and drugs that cause urticaria. Commonly used loratadine, cetirizine, etc. for anti-allergy treatment.
3. Psoriasis: its treatment includes local topical and systemic oral. Commonly used topical drugs include glucocorticoid ointment such as halometasone ointment and vitamin D3 derivatives such as calcipotriol; oral drugs include retinoids such as avitamin A and immunosuppressants such as methotrexate.
It is recommended to consult a doctor in time to clarify the cause of the disease and then carry out appropriate treatment. The use of specific drugs should be under the guidance of a doctor.