Scalp psoriasis may be related to genetics, immune system response, and environmental factors. Treatment usually requires a combination of care and medical intervention. It is recommended to consult a doctor promptly to develop a treatment plan based on your individual situation.

1. Common causes: Some people have a family history of the disease; abnormal immune system may cause skin cells to grow too fast; mental stress, infection or climate change may trigger or aggravate symptoms.

2. Treatment: The doctor may prescribe topical medications, such as shampoos containing coal tar or vitamin D analogs; phototherapy or oral medications may be used for more severe cases; use mild shampoos daily and avoid scratching the scalp.
You should keep your scalp clean, choose non-irritating hair care products, and try to reduce stress. If symptoms persist or worsen, please consult a qualified doctor at a reputable hospital and follow their professional guidance for treatment.