output: The patient is likely to have ### Hair Disease: Telogen effluvium ### Disease Description: Telogen effluvium is a scalp disorder characterized by the thinning or shedding of hair resulting from the early entry of hair in the telogen phase (the resting phase of the hair follicle). Emotional or physiological stress may result in an alteration of the normal hair cycle and cause the disorder. ### Severity of Disease: Mild The patient should use ### Medication: Niacin supplements ### Medication Description: Also known as vitamin B3, niacin can improve blood circulation in the scalp, which can stimulate hair growth. ### Duration: 3 months ### Side Effects: Flushing, Headache, Itching