• Pregnancy or nursing.
• Under 18 years old.
• No other family members have had hair loss (no family history of hair loss).
• Loss of the eyebrows or eyelashes.
• Women who have hair loss after giving birth.
• Changes in the fingernails or toenails along with hair loss.
• Receiving chemotherapy or other medications that can cause hair loss.
• Hair loss that could be from lack of nutrition (increasing protein and iron intake can help to treat hair loss from nutritional deficiencies).
• Hair loss from a burn or skin damage to the scalp.
• Sudden onset of severe hair loss.
• Patchy hair loss.
• Fever or other symptoms before hair loss begins.
• Recently stopped taking oral contraceptives.
• Sudden onset of acne, hair loss, menstrual cycle changes, or more hair growth on other body parts.
• Hair loss due to psoriasis or seborrheic dermatitis.