Causes of Hair Loss in Scalp Psoriasis 

• Inflammation:

  The inflammation caused by psoriasis can damage hair follicles, leading to hair loss. 

• Scratching:

  The scales and plaques of psoriasis can be itchy, leading to scratching. This can damage hair follicles and further promote hair loss. 

• Treatments:

  Some treatments for scalp psoriasis, such as topical corticosteroids and oral medications, can also cause hair loss as a side effect. 

• Telogen effluvium:

  Psoriasis can trigger a condition called telogen effluvium, where a large number of hair follicles enter the resting phase (telogen) at the same time, resulting in temporary hair loss.