The Norwood Scale: Assessing the Stages of Male Pattern Baldness

Hair loss, especially when it comes to male pattern baldness, is a common concern among men across the globe. To classify and understand the progression of this type of hair loss, the Norwood Scale is widely used by dermatologists, trichologists, and hair transplant surgeons. This article sheds light on the Norwood Scale, its stages, and its significance in assessing male pattern baldness.

Stage 1
No significant hair loss or recession of the hairline.

Stage 2
A slight recession of the hairline around the temples, often referred to as an "adult" or "mature" hairline.

Stage 3
The first signs of clinically significant balding appear. The hairline recession is more pronounced and deepens into the frontal region. This stage also includes Stage 3 Vertex, where hair loss is prominently seen at the crown (vertex) of the head.

Stage 4
Hairline recession becomes more severe compared to Stage 3, and there is sparse hair or no hair on the vertex. A clear band of hair divides the two areas of hair loss.

Stage 5
The areas of hair loss are larger than in Stage 4, but they are still separated. The band of hair between the hair loss areas starts thinning.

Stage 6
The bridge of hair that once separated the front and vertex starts to disappear. The hair loss areas join together.

Stage 7
The most severe form of male pattern baldness. Only a narrow band of hair remains on the sides and back of the scalp. This hair is often not dense and may be fine in texture.