Social/Psychological Factors?
Stress
Panic attacks
Depression
Consume large amounts of alcohol
Obstructive Sleep apnoea/hypopnoea
Anorexia/Bulimia
Alzheimers/Dementia disease
Dementia
Heavy smoker (smoke more than 30 cigarettes daily, cigars, cigarillos, pipes or chew tobacco/beetle nut)
Poor diet
Over use of hair drying and heated brushes
Trichotillomania