Which of the following is not a ceruloderma?: (A) Cockade nevus, (B) Nevus of Ota, (C) Nevus of Ito, (D) Mongolian spot
Answer is A. Ceruloderma refers to dermal melanocytic lesions with blue colour. These include mongolian spot, N. of Ota & Ito, blue nevus. NB: Mongolian spot- lumbosacral region is the common site. Nevus of Ota- 1st & 2nd division of trigeminal nerve Nevus of Ito- acromioclavicular region & deltoid. Cockade nevus is an acquired melanocytic nevus refering to multiple, target-like naevi showing concentric circles of increased melanin pigmentation. Ref: Rook's textbook of dermatology, Edition-8, Page-54.20.