Hair loss can be of three types: SHEDDING, THINNING or BREAKAGE.
A normal scalp hair is shed every 3-4 years then re-grows from the same folliclewith a new hair of the same diameter. In certain situations (see below) the hair sheds more frequently. In spite of this, the follicle remains full-sized and healthy.This excessive loss of full-sized hairs is called “shedding.” Shedding occurs over the entire scalp and does not result in pattern balding. Most people spontaneously improve after shedding.
Graphic Shedding in women
Thinning is a more complex and troublesome problem than shedding. In thinning, the hair is shed, and the new hair regrows with a smaller diameter. The follicle becomes progressively smaller. The growing phase becomes progressively shorter. Eventually the hair and follicle become so small that an area of balding results.
Thinning will not spontaneously improve. It can be stabilized and reversed with proper medical treatment. Thinning can occur in both men and women. In the following photos both patients have 230 hairs per sq cm.. The photo on the left is a normal scalp with no thinning. The photo on the right is from a patient with thinning. Note the variation in the diameter of hairs. Photos llke these will be taken of your scalp: on the top where thinning is suspected (Zones 1-7). and in the back and sides (Zone 8) where thinning never occurs.
Breakage is more common in women than it is in men. That’s because women wear their hair longer and chemically color, curl, and straighten their hair. The most common cause of breakage is not related to mishandling at all. Some people have very fine hair… they are born with it. These folks commonly have lots of breakage. But breakage can be self-inflicted as well:
Physical = hot irons, blowers, sun exposure, vigorous combing and brushing.
Chemical = straighteners, perms, colorants, bleaches, etc. Treatment