Dry scaly scalp may be due to a fungal infection. Before applying any topical medications, I would suggest that you have scrapings from the affected areas assessed microscopically. This will help us determine if a fungal infection is present. Fungal infections of the scalp may require topical antifungals and topical corticosteroids. For seborrheic dermatitis using medicated shampoos like Selsun Blue (1% selenium