Psoriasis on the scalp is usually related to a variety of factors, including abnormal immune system function, genetic factors, environmental triggers, and psychological stress. It is recommended to consult a dermatologist promptly for standardized treatment and daily care to alleviate symptoms.

Specifically, common influencing factors include:

1. Immune system response: An overactive immune response causes scalp skin cells to grow too quickly, resulting in scales and erythema.
2. Genetic predisposition: Some people have a family history of this condition and may be more likely to experience it.
3. External triggers: such as climate change, skin injury, infection or certain medications, may trigger or worsen symptoms.
4. Mental stress: Long-term tension and anxiety may also affect the fluctuation of the condition.
For daily hair care, choose gentle shampoos, avoid scratching your scalp, and maintain a regular sleep schedule. If symptoms are severe, your doctor may recommend topical medications or light therapy. Do not self-medicate; regular checkups will help control the condition.