Alopecia-intellectual disability syndrome

Alopecia-intellectual disability syndrome (also known as Alopecia-mental retardation syndrome, or Perniola-Krajewska-Carnevale syndrome) is an extremely rare genetic disorder characterized by the combination of total or near-total alopecia (absence of hair) and intellectual disability of variable severity. The condition typically presents from birth or early childhood, with affected individuals showing universal alopecia involving the scalp, eyebrows, eyelashes, and body hair, along with developmental delay and cognitive impairment. Some reported cases have also included additional features such as seizures, distinctive facial features, and skin abnormalities. The syndrome primarily affects the integumentary system (skin and hair) and the central nervous system (brain development and cognitive function). The alopecia is usually congenital and persistent, distinguishing it from acquired forms of hair loss. The degree of intellectual disability can range from mild to severe. Additional clinical features reported in some families include microcephaly, short stature, and skeletal anomalies, though the phenotypic spectrum may vary between affected families. There is currently no curative treatment for alopecia-intellectual disability syndrome. Management is supportive and symptomatic, focusing on educational support and developmental interventions for intellectual disability, dermatological care, and management of any associated features such as seizures if present. Wigs or other cosmetic solutions may be offered for the alopecia. Genetic counseling is recommended for affected families to discuss recurrence risks and family planning.

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