Stages of Hair Loss
No significant hair loss or recession of the hairline.
There is a slight recession of the hairline around the temples. This is also known as an adult or mature hairline.
The first signs of clinically significant balding appear. The hairline becomes deeply recessed at both temples, resembling an M, U, or V shape. The recessed spots are completely bare or sparsely covered in hair.
Stage 3 - Vertex
The hairline stays at stage 2, but there is significant hair loss on the top of the scalp (the vertex).
The hairline recession is more severe than in stage 3, and there is sparse hair or no hair on the vertex. The two areas of hair loss are separated by a band of hair that connects to the hair remaining on the sides of the scalp.
The two areas of hair loss are larger than in stage 4. They are still separated, but the band of hair between them is narrower and sparser.
The balding areas at the temples join with the balding area at the vertex. The band of hair across the top of the head is gone or sparse.
The most severe stage of hair loss, only a band of hair going around the sides of the head remains. This hair is usually not dense and may be fine.