The early symptom of head psoriasis is mainly an increase in dandruff, and many people mistake it for dandruff and buy some shampoos that remove dandruff. In fact, there are many reasons for the increase of dandruff in our life, and psoriasis patients will not notice whether they have psoriasis. Dandruff is a physiological phenomenon of head skin metabolism and self-renewal, which is hard to be noticed under normal circumstances. However, if the scalp is attacked by bacteria or infected with some related disease, dandruff will suddenly increase. Psoriasis can involve the head, most notably as white-gray patches on the scalp, which can be felt if touched with the hand. If there is the above-mentioned situation, it is not good to be anxious and afraid, the patient should go to a regular hospital for examination and treatment, so as not to cause more serious consequences.