Hello, Thank you for posting on HCM. It seems you are suffering from Seborrheic dermatitis,which secondarily leads to hairfall and thus its important to treat it first hand. I would recommend you a short course of oral antifungal drugs like ketoconazole/itraconazole and a lotion containing clotrimazole and betamethasone twice a day over scalp for few weeks. Use a medicated shampoo containing ketoconazole and salicyclic acid twice a week. Take antihistaminics as required for itching. Avoid excessive use of hair oil. As for the hairfall, start oral supplements containing biotin and other essential vitamins and minerals (Follihair new) once a day for atleast 3 months. For alopecia areata, enquire about intralesional steroid with your dermatologist and other treatment options like microneedling, phenolization etc. Hope this will take care of your query. Thank you Dr Hardik Pitroda