Norwood Hamilton scale is a measurement tool for examining male pattern hair loss. It is aworldwide-accepted standard to categorize hair fall problem. Dr. James Hamilton first invented it in 1950. Later on Dr. O’tar Norwood revised it in 1970.
Norwood Hamilton scale is not a complex tool to understand. It is very simple tool to judge your hair loss pattern. Even you can identify your hair loss category. There are seven stages in Norwood Hamilton scale and each stage indicates the intensity of your hair loss problem. The higher the stage, the higher acute the problem is. For example, if you are at level 5 or higher, the influence of medication is very low. At that stage, you have to go for hair transplant or wig.
Norwood Hamilton Stage-1
It is the primary and intact stage at which hair loss or baldness not appeared. You just have to keep an eye on recession. If there is any history of baldness in your family then it may be a matter of concern. If no family history exists, you don’t need to worry about. In case of a family history of baldness, you should monitor the situation carefully.
Norwood Hamilton Stage-2
At this stage the evidence of hair fall is appeared. In front of the ears, hair starts thinning ahead of a line several centimeters. The temporal area is about to take a triangular shape when this signs are noticed. Youneed to react quickly to stop further hair loss.
Norwood Hamilton Stage-3
This stage is sufficiently considered for developing the likelihood of further hair loss. Some people have narrow symmetrical recession at forehead, which is bared, orwith dispersed hair(norwood-3A). At stage 3 vertex, a crown is emerged with the age.
Norwood Hamilton Stage-4
Hair recession get a sever momentum at this stage. The forehead take a half circle shape. Medication for hair regrowing is not a effective option so hair transplant is the only way to get your hair back.
Norwood Hamilton Stage-5
At this stage, there is little hair left on the forehead. At the same time hair, recession enters into the crown area (Norwood-5A). Some people have a bridge of hair that separate the two bald area (Norwood-5v)
Norwood Hamilton Stage-6
The bridge area is vanished at this stage. The temporal area and vertex take a uniform shape. As the days pass, this shape turns into horseshoe.
Norwood Hamilton Stage-7
This is the extreme stage of hair loss. The horseshoe area takes narrower shape. The shrink hair area is used as donor hair for transplant. As it is the last stage of hair fall, there are a few hair remaining for transplant.