You might be having severe dandruff also known as seborrheic dermatitis
. This could also lead to severe hair fall.
To treat the same, use a ketoconazole
based shampoo three times in a week
Apply a steroid salicylic acid
based lotion over scalp for few weeks. Once the scalp is clear, you may stop using the lotion, however continue with shampoo
To promote hair growth later on minoxidil
solution can be used.
Take a good nutritious diet and avoid chemical treatment or salon based treatment of hair.
Hope that answers your query. Take care.