What causes itchy scalp and dandruff?

Itchy dandruff is mostly caused by seborrheic dermatitis of the head, ringworm of the head, head simple furfury and other diseases, it is recommended to go to the hospital in time for diagnosis and treatment.
1. Seborrheic dermatitis of the head: in addition to the above symptoms, can also be accompanied by greasy dandruff, erythema and even oozing, vesicles and other symptoms, the cause of which may be genetically related, poor dietary habits, etc., can be prescribed the use of ketoconazole, selenium sulphide, and other drugs treatment.
2. ringworm of the head: local skin is caused by fungal infection, can also appear red pimples, alopecia and other symptoms, can use terbinafine, itraconazole and other antifungal drug treatment.
3. Head simple chaff rash: can be associated with pathogenic bacterial infection, scalp dryness, the use of irritating shampoo and other factors, often show the above symptoms, can be relieved by moisturizing, gentle cleaning of the scalp and other methods.
It is recommended to go to the hospital in a timely manner, under the guidance of the physician medication, to avoid blind treatment, so as not to delay the condition.