The Hair Loss Encyclopedia
genetic disorder causing sparse hair, missing teeth, and reduced sweating
Hypohidrotic Ectodermal Dysplasia (HED) is a genetic disorder that affects the development of the skin, hair, nails, teeth, and sweat glands. Individuals with HED often have sparse hair, missing or malformed teeth, and an inability to sweat properly, which can lead to overheating. This condition is also known as anhidrotic ectodermal dysplasia or Christ-Siemens-Touraine syndrome.