Korean J Dermatol.  1984 Feb;22(1):22-26.

The Frequency and Clinical Observation of Ota's Nevus

• Hwang SW
• Chung TB
• Sohn HS
• Kim YP

Abstract

The clinical observation was done on 126 patients of Ota's nevus, 113 of whom were seen at Department of Dermatology, Chonnam National University Hospital from January 1973 through July 1983, and 13 of whom were found among 45, 87l male and female students of high school in Kwangju City, Korea. The results obtained were as follows: 1. The incidence of male and female students of Ota's nevus were respectively 0. 013% and 0.043%, with the incidence,as a whole being 0.03%, whereas the frequency of Ota's nevus among the outpatients was 0. 24% with the ratio of male to female being 1: 2. 67. 2. There was only one family of familial occurrence, in which 2 sisters were involved among 5 siblings. 3. Thirty three percent of Ota's nevus showed the onset at birth. 4. According to Tanino's classification, our patients showed that Type II was 41.7% and then Type Ia, III, Ib, and IV being respectively 33. 3%, 16. 7, 4.2, and 4. 2%. 5. Seleral involvement was 54.2%, especially in type III and Type II. 6. The color was increased in 54%, especially Type II by internal and external factors such as fatigue, warm temperature, menstruation and cold temperature. 7. The color intensification was prominent at the age of 10 to 14.

MeSH Terms

Classification
Cold Temperature
Dermatology
Fatigue
Female
Gwangju
Humans
Incidence
Jeollanam-do
Korea
Male
Menstruation
Nevus of Ota*
Outpatients
Parturition
Siblings