Bloch-sulzberger syndrome
Other names[edit | edit source]
Incontinentia pigmenti (IP)
Pathophysiology[edit | edit source]
It is an inherited disorder of skin pigmentation that is also associated with abnormalities of the teeth, skeletal system, eyes, and central nervous system.
Mucocutaneous disorder[edit | edit source]
It is one of a group of gene-linked diseases known as neurocutaneous disorders.
Cause[edit | edit source]
In most cases, IP is caused by mutations in a gene called NEMO, which stands for NF-kappaB essential modulator.
Sex differences[edit | edit source]
Males are more severely affected than females.
Skin changes[edit | edit source]
Discolored skin is caused by excessive deposits of melanin (normal skin pigment). Most newborns with IP will develop discolored skin within the first two weeks. The pigmentation involves the trunk and extremities, is slate-grey, blue or brown, and is distributed in irregular marbled or wavy lines. The discoloration fades with age.
Neurological problems[edit | edit source]
Neurological problems include loss of brain tissue (known as cerebral atrophy), the formation of small cavities in the central white matter of the brain, and the loss of neurons in the cerebellar cortex.
Motor skills[edit | edit source]
About 20% of children with IP will have slow motor development, muscle weakness in one or both sides of the body, impaired cognitive development, and seizures.
Vision problmes[edit | edit source]
They are also likely to have visual problems, including crossed eyes, cataracts, and severe visual loss. Dental problems are also common, including missing or peg-shaped teeth.
Related disorder[edit | edit source]
A related disorder, incontinentia pigmenti achromians, features skin patterns of light, unpigmented swirls and streaks that are the reverse of IP. Associated neurological problems are similar.
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