Hair loss without Shedding: Where did it go?

Hair loss without shedding 

Hair loss that occurs slowly over time without the patient noticing an increase in daily shedding is a special situation. 

Some hair loss conditions are associated with significant and sometimes rapid reduction in hair density without a noticeable increase in shedding. Examples include female pattern hair loss, many scarring alopecias (pseudopelade, lichen planopilaris, frontal fibrosing alopecia, as well as subclinical shedding disorders. Trichotillomania should also be included on this list. However, the list expands greatly if the individual shampoos frequently (ie daily). In that case the list of causes also includes many of the effluviums (ie telogen effluvium), as well as alopecia areata.