The patient is likely to have ### Hair Disease: Tinea Capitis ### Disease Description: Tinea capitis, also known as ringworm of the scalp, is a fungal infection that affects the scalp and hair shafts, causing small patches of itchy, scaly skin. ### Severity of Disease: Severe The patient should use ### Medication: Undecylenic acid ### Medication Description: A fatty acid that is used as a fungicide. It is used in the treatment of fungal skin infections such as athlete's foot, ringworm, and jock itch. It may also be used in the treatment of tinea capitis. ### Duration: 4-8 weeks ### Side Effects: Skin irritation, Burning sensation, Redness