The causes of itchy scalp hair loss are physiological factors (such as poor hygiene) and disease factors (common in ringworm, seborrheic dermatitis and other diseases).
1. Physiological factors: if the usual cleaning is not in place, do not wash the hair diligently, resulting in sebum accumulation of pores, which will trigger the phenomenon of scalp itching and hair loss; in addition, due to the weather and the hair quality, dry hair, scalp is too dry, there will be itchy, hair loss symptoms.
2. Disease factors:
(1) Tinea capitis: this disease is mainly caused by dermatophytes infecting the scalp, and common germs include canine microsporidium, gypsum-like microsporidium, hair-breaking trichophyton and so on, which manifests as scales, pimples, pustules, hair-breaking, hair loss, itchy scalp and other symptoms.
(2) seborrheic dermatitis: the cause of this disease is unknown, may be related to heredity, psychological factors, fungal infections and impaired skin barrier function, etc., manifested as erythema and greasy scales on the head and face, accompanied by itching, hair loss and other symptoms.
It is recommended that if the patient suspects that the disease is caused by the disease, go to the dermatology department of the regular hospital in a timely manner, after a clear diagnosis, timely treatment.