Stages of Hair Loss

Phase 1

Slight or no receding hairline.

Phase 2

The hairlines of the frontal bones and temporal bones move backward in a triangular shape.

Phase 3

Visible changes of the hairline. The hairline at the temporal bone is moved back significantly. With thinning hair or no hair coverage at the hairline.

Phase 4

The hairline at the temporal bone moved back in a limited extent. Hair loss is mainly on the top of the head.

Phase 5

The hairline at the temporal bone is more backward than stage III. Thinning hair or no hair on the top of the head. Thick and moderate hair coverage between the hairline and the top of the head.

Phase 6

The hair between the temporal bones and the top of the head begins to narrow and thin out.

Phase 7

The temporal bone begins to connect with the alopecia area on the top of the head, with only thinning hair in between.

Phase 8

The hair on the ears and the nape of the neck forms a semicircular shape, and the hair is sparse.