What is a distinguishing feature of FPHL seen during examination?

In female pattern hair loss (FPHL), a key distinguishing feature observed during examination is the loss of terminal hairs specifically in the frontal area of the scalp. This pattern of hair thinning typically presents as a widening of the part line and a noticeable decrease in hair density, particularly at the crown and along the frontal hairline. Unlike other forms of hair loss, such as alopecia areata, FPHL does not typically result in patchy hair loss; the hair thinning is more diffuse and gradual.

The focus on the frontal scalp aligns with the characteristic progression of FPHL, where the frontal and vertex regions are predominantly affected, leaving the occipital areas relatively less impacted. This selective hair loss contrasts sharply with conditions that produce different patterns of hair loss, making it a recognizable feature during clinical evaluation. Thus, understanding this specific manifestation aids clinicians in diagnosing FPHL effectively.