Vesicular lesions in a neonate: what's your diagnosis?
نویسندگان
چکیده
Incontinentia pigmenti (IP) is a rare genodermatosis transmitted as an X-linked dominant trait, occurring in 1:50,000 newborns.(1-3) It is frequently lethal in males.(1-3) In this disease, basal cells in the epidermis lose melanin that is collected in the dermis.(2,3) Typically, skin manifestations progress through four stages: vesicular (evident at birth or within the first few postnatal weeks); verrucous; hyperpigmented, and hypopigmented.(1-3) Extracutaneous involvement occurs in 80% of patients.(1) A skin biopsy and/or genetic testing for mutations in NEMO/IKK-gamma confirm the disease.(1-4) A female full-term newborn presented with multiple vesicular lesions in the first 12 hours of life. Given the suspicion of neonatal herpes, she was initiated on acyclovir. Detection of herpes simplex virus by culture and polymerase chain reaction were negative (blood and skin lesions). Within 36 hours, vesicular and hyperpigmented linear skin lesions were apparent, distributed along Blaschko lines, evoking IP. At this time,
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