Pieces of dandruff on the head may be eczema or psoriasis, which should be treated at a hospital. After the doctor gives a clear diagnosis based on clinical manifestations, if it is seborrheic dermatitis, you can apply topical ointments containing hormones, such as fluticasone propionate cream, mometasone furoate cream, and if necessary, you can apply selenium disulfide to wash your hair. In the case of psoriasis, topical application of carbotriol ointment and carbotriol lotion can be applied, and hormonal creams can be applied if necessary. Specific diagnosis and treatment is recommended to be given after the clinician has made a clear diagnosis, after which appropriate treatment is given to avoid delaying the condition.