98% of men who experience hair loss in their lifetime do so as a result of androgenetic alopecia. This usually begins with a receding hair line and can often result in severe hair loss eventually. Apart from androgenetic alopecia, there is also Telogen effluvium and non pattern hair loss. The former is hair loss that is usually caused by the likes of medication, diet patterns, stress, and thyroid abnormalities. The latter relates to any random and rare hair loss experienced, such as scarring alopecia and compulsive hair pulling (also known as trichotillomania).