Congenital Anosmia


Type of disease: Rare conditions

Congenital anosmia is a very rare condition in which individuals, beginning at birth, have a lifelong inability to smell. Although it can occur alone, it may also be a symptom of another condition such as Kallman syndrome. Congential anosmia in individuals with no other symptoms (isolated congenital anosmia) is thought to be due to errors in the development of the system that enables us to smell (the olfactory system) and may be related to mutations in a gene on chromosome 18. Isolated congenital anosmia is thought to be inherited in an autosomal dominant pattern. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.

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