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Updated: Mar 14, 2026

Quantification of Hypopigmentation Activity In Vitro
Published on: March 6, 2019
[Ito hypomelanosis: Four case reports]
Insights
Ito hypomelanosis is a rare neurocutaneous disorder causing epilepsy and psychomotor delay in infants. This study highlights the condition
Area of Science:
- Neurocutaneous disorders
- Pediatric neurology
- Genodermatoses
Background:
- Ito hypomelanosis is a rare neurocutaneous disorder characterized by hypopigmented macules.
- It is often associated with neurological abnormalities, presenting a diagnostic challenge.
Observation:
- Four infants aged 8-20 months presented with epilepsy, psychomotor delay, and diffuse hypomelanosis.
- Electroencephalograms revealed diffuse irritative abnormalities.
- Brain imaging was normal in two cases and showed hemispheric atrophy in one.
Findings:
- All infants exhibited drug-resistant epilepsy and persistent psychomotor delay.
- No significant improvement was observed despite antiepileptic treatment and physical therapy.
- The neurocutaneous and neurological manifestations appear to follow a severe, unremitting course.
Implications:
- This case series underscores the severity of Ito hypomelanosis and its profound impact on neurodevelopment.
- Early recognition and multidisciplinary management are crucial for affected infants.
- Further research into the underlying pathophysiology and potential therapeutic targets is warranted.
Abstract:
Ito hypomelanosis is a rare neurocutaneous condition. We report on four observations in infants aged between 8 and 20 months. They all presented with epilepsy, psychomotor delay, and diffuse hypomelanosis. The electroencephalograms showed diffuse irritative abnormalities. Brain imaging was normal in two infants and showed hemispheric atrophy in another case. Despite antiepileptic treatment and physical therapy, no significant progression was noted and all children continued to have drug-resistant epilepsy and psychomotor delay.
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