Age of onset and age distribution of keloid disorder has not been well documented. Based on clinical observations, various authors have reported keloid to be commonly seen between the ages of 10 and 30. Although keloids can occur at any age, they tend to develop more rapidly during and after puberty. Our current understanding is solely based on observation or citations of very old medical literature. According to recent studies, which include very large number of keloid patients, a 10-year-old boy with earlobe keloid was the youngest. In Another study, the age of onset of keloid was determined by taking a keloid history from the patients. The age reported for first keloid development in this study varies from 5 to 52 years, although most patients (50%) reported onset of their first keloid between 10 and 19 years. Similarly when individuals with multiple keloids were asked to recall onset age of each lesion, participants reported the largest number of keloids (46%) appearing between 10 and 19 years.
Our own unpublished data suggests that the age of onset of keloid for majority of patients ranges between 5 to 25 years. Keloid disorder in indeed a pediatric disorder with 62% of cases developing their first keloid at age of 17 or younger.