Damage to the skin barrier with small red pimples may be contact dermatitis, eczema, folliculitis, etc., need to be on the cause of the drug treatment, physical therapy. 1 contact dermatitis: contact dermatitis can lead to contact with allergens or irritants site erythema, pimples and other damage, can be prescribed topical dexamethasone and other glucocorticosteroid drugs, oral antihistamine such as loratadine and so on. 2. Eczema: eczema can also cause local erythema, papules, papules, oozing and other polymorphic damage, can be prescribed oral levocetirizine and other antihistamines, topical haldolone ointment, hydrocortisone cream and other glucocorticosteroid drugs. 3. Folliculitis: folliculitis can be secondary to trauma and other skin barrier damage, associated with bacterial infection, can be prescribed topical mupirocin ointment, erythromycin ointment and other antibiotic ointment. It is recommended that people with impaired skin barrier and small red pimples go to the hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.