👉 Chaetonychia is a developmental disorder characterized by abnormal growth of hair follicles, often in the skin, which may become detached from surrounding skin and can lead to bald patches or severe scarring. This condition typically affects children between the ages of 3 and 12 years old. It is caused by a deficiency in the enzyme keratin, leading to the breakdown of keratinocytes, where hair follicles are produced.
