Dandruff and large and crusty may be seborrheic dermatitis, may also be ringworm of the head.
1. seborrheic dermatitis: the etiology of this disease is unknown, may be related to genetic factors, fungal parasites, skin lipids, skin barrier function is impaired, individual susceptibility, etc., occurring in the scalp, manifested in erythema overlying greasy dandruff, accompanied by mild itchiness, the severe cases may appear greasy yellow or brown scabs, accompanied by vesiculation, oozing, emitting a strange odor, thinning of the hair and other symptoms.
2. Tinea capitis: this disease is caused by dermatophyte infection, common germs include canine microsporidium, gypsum-like microsporidium, Hirschsprung’s bacillus, gypsum-like trichophyton and so on, which manifests itself as scales, pimples, pustules, hair breakage, soybean-sized yellow ringworm scabs and other symptoms.
When the above symptoms appear, it is recommended to go to the dermatology department of the regular hospital in time, after a clear diagnosis, follow the doctor’s instructions and reasonable treatment, to avoid delaying the condition.