Understanding Hystricomorphic Hairs: Causes, Symptoms, and Treatment Options

Hystricomorphic refers to a type of morphological transformation that occurs in the hair follicle during the development of certain skin conditions, such as acne and rosacea. It is characterized by the abnormal growth and formation of the hair shaft, which can lead to the development of thickened, distorted, or misshapen hairs.

In people with acne-prone skin, the hair follicles can become clogged with dead skin cells, oil, and bacteria, leading to the formation of comedones (blackheads and whiteheads). Over time, this can cause the hair shaft to grow in a distorted manner, resulting in hystricomorphic hairs. These hairs are often thicker and more brittle than normal hairs, and may be more prone to breakage.

In people with rosacea, the condition can also cause hystricomorphic changes in the hair follicles, leading to the development of thickened, reddened, or irregularly-shaped hairs.

Hystricomorphic changes can be observed using a dermatoscope, which is a handheld device that uses a specialized lens to magnify the skin and examine it for signs of disease. By examining the hair follicles under a dermatoscope, dermatologists can identify hystricomorphic changes and determine the appropriate treatment for the underlying condition.