Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Hypohidrotic ectodermal dysplasia ?
    ### Response:
    Hypohidrotic ectodermal dysplasia (HED) is a genetic skin disease. Common symptoms include sparse scalp and body hair, reduced ability to sweat, and missing teeth. HED is caused by mutations in the EDA, EDAR, or EDARADD genes. It may be inherited in an X-linked recessive, autosomal recessive, or autosomal dominant manner depending on the genetic cause of the condition.
    