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ACCESSORY NIPPLES AND URINARY TRACT MALFORMATION

Of 50 patients, in 38 (76%) age at onset was 5 years or less. This indicates that the disorder is mostly a concern in chUdren of preschool age. This is in contrast to vitiligo, which often first appears at school age (>5 yrs) (5—7). Two of our patients had generalized NDP. Some authors believe that incontinentia pigmenti achromians is a variant of generalized NDP (8,9). Others, however, believe that they are two different entities (2). In contrast to observations by others that NDP most commonly involves the trunk and proximal extremities and only rarely the face and neck (2), 19 (38%) of our patients had lesions on the face and neck. Among the associated diseases, atopic dermatitis in 5 (10%) patients and a family history of atopy in 14 (28%) are significant observations not mentioned before in the literature.