Abstract
Hypomelanosis of Ito, initially referred to as incontinentia pigmenti achromians, is a rare neurocutaneous disorder. Hypopigmented lesions following the lines of Blaschko are usually the presenting feature. Multiple organ systems can be involved including brain, musculoskeletal, cardiovascular, eyes, kidneys, and teeth. The neurologic complications can include seizures, hemimegalencephaly, developmental delay and abnormalities in tone. Genetic mosaicism is the most likely explanation for its inheritance. It must be distinguished from incontinentia pigmenti because at early stages, skin lesions can appear similar between the two conditions. Consensus recommendations for screening of associated extracutaneous conditions do not exist and management is symptomatic, but regular evaluation of somatic growth, neurodevelopment, endocrine status, eyes, and teeth should occur. Initial screening of renal function has also been recommended. Awareness of this disorder will allow for diagnosis, genetic counseling and appropriate screening.
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