The time to heal from atopic dermatitis varies depending on the individual’s physical condition, degree of skin inflammation, treatment and aftercare. Patients with good health, mild symptoms, and proper care can heal in about 1 week; those with poor health, heavy symptoms, and improper treatment and care will take about 2-3 weeks, and those with more severe symptoms may take several months to heal. Allergic dermatitis is mostly due to inflammatory reactions of the skin or mucous membranes after contact with exogenous substances, usually manifested as erythema, swelling, papules, blisters, etc., usually accompanied by itching symptoms. When the symptoms of atopic dermatitis appear, you need to seek medical attention and treatment as soon as possible to avoid more serious subacute dermatitis or chronic dermatitis. The treatment is mainly anti-allergic, can be used under the guidance of the doctor anti-histamine drugs, such as loratadine, cetirizine, etc., oral vitamin C, calcium tablets and other auxiliary treatment, but also local furacilin solution wet compresses. In addition, the treatment process should pay attention to care, generally allergic dermatitis will appear itching, redness, swelling and heat pain, avoid scratching with hands to avoid infection. Do not use hot water and soap to clean the skin and reduce the stimulation of the skin. Eat a light diet, avoid spicy and stimulating foods, and eat more fresh vegetables and fruits rich in vitamins to strengthen your body. After the allergy is healed and antihistamines are stopped for 1-2 weeks, attention needs to be paid to investigate the cause of allergy, and allergen exclusion tests can be performed to avoid secondary exposure to allergens that can trigger severe allergies.