diseases which cause hair loss
1 Celiac disease is an allergy to gluten, and can cause hair loss. 2  Systemic lupus erythematosus is an autoimmune disorder that can cause hair loss. 3  Trichorrhexis nodosa occurs when hair shafts have weaknesses and break easily.
1 Hypothyroidism, or an underactive thyroid, can also cause hair loss. 2  Hypopituitarism, or an underactive pituitary gland, can cause hair loss. 3  Lichen planus is a skin condition that can cause hair loss, as well as discoloration of the scalp. 4  Celiac disease is an allergy to gluten, and can cause hair loss.
Tinea capitis, or ringworm, is a superficial fungal infection of the scalp that leads to hair loss in a characteristic pattern. It is caused by the fungi Trichophyton and Microsporum and is the most common pediatric dermatophyte infection worldwide.