Rash on the arm may be the appearance of eczema, keratosis pilaris, psoriasis, papular urticaria, etc. According to the different symptoms, choose different drugs for treatment.
1. Eczema: arm rash may be eczema, you can apply glycerin lotion and other anti-itch treatment. If the inflammation is heavy, you can then apply glucocorticoid ointment such as mometasone furoate ointment, and take antihistamine drugs such as chlorpheniramine maleate orally.
2. Keratosis Pilaris: If the arm rash is caused by keratosis pilaris, you can apply retinoic acid cream or salicylic acid ointment to soften the keratin and improve the symptoms of arm rash.
3. Psoriasis: arm rash may be caused by psoriasis, you can use tacalcitol ointment and other vitamin D3 derivatives, fluticasone propionate cream and other glucocorticoids. If necessary, you can take oral medication such as Avitamin A capsules and methotrexate.
4. Pemphigus urticaria: If the arm rash is caused by pemphigus urticaria, you can take oral anti-allergy drugs such as levocetirizine hydrochloride, and use zinc oxide ointment to stop the itching.
There may be other causes of arm rash, it is recommended to go to the hospital in a timely manner, to identify the cause, symptomatic treatment, drugs should be used under the guidance of a doctor.