Red spots on the scalp are commonly seen in seborrheic dermatitis, psoriasis and other diseases, you can target the cause of the disease, the use of glucocorticosteroids, antifungal drugs and other drugs is better. 1. seborrheic dermatitis: scalp can be used topical antifungal drugs to control the symptoms, such as ketoconazole, econazole lotion, etc.; inflammation is more serious lesions, can be used topical glucocorticoid therapy, such as hydrocortisone ointment, etc.; glucocorticoid treatment is ineffective, can be used topical calcium-modulated phosphatase inhibitor treatment, such as tacrolimus, pyrimethamine and so on; itching is severe, can be taken orally antihistamines treatment, such as chlortetracycline and so on. 2. Psoriasis: for small lesions, glucocorticoid therapy can be used externally, such as mometasone furoate ointment, dexamethasone ointment, etc.; it can also be used with vitamin D₃ analogues for treatment, such as caspofloxacinol, tacalcitol, etc.; for larger lesions, methotrexate can be taken orally for treatment; for more serious conditions, biologics can be used for treatment, such as etanercept and infliximab. It is recommended that patients go to regular hospitals, clear the cause of the disease, under the guidance of the doctor reasonable medication, not blindly self-medication, to avoid adverse reactions, delay the condition.