Sudden hair loss could either be due to genetic factors or because of certain diseases ranging from thyroid to diabetes to anorexia.

- Thyroid disease
- Infections of the scalp such as ringworm
- Diabetes
- Lupus
- Anaemia
- Anorexia
- Bulimia

But worry not! Seek immediate medical help as hair loss could be an indication of a deeper underlying medical condition that should not be ignored.