<unk>  <unk>  is a group of genetic syndromes all deriving from abnormalities of the<unk>  structures. More than 150 different syndromes have been identified. Despite some of the syndromes having different genetic causes, the symptoms are sometimes very similar. Diagnosis is usually by clinical observation, often with the assistance of family medical histories so that it can be determined whether transmission is autosomal dominant or recessive.<unk> s are described as "heritable conditions in which there are abnormalities of two or more<unk>  structures such as the hair, teeth, nails, sweat glands, salivary glands, cranial-facial structure, digits and other parts of the body."
Ectodermal dysplasia
Gonadal dysgenesis
Trophoblastic neoplasm
Splenogonadal fusion
Diastrophic dysplasia
Disorders of sex development
Vascular ring
Female genital mutilation