The age distribution of keloids is not well documented. Based on clinical observations, various authors have reported keloids to be commonly seen between the ages of 10 and 30.
Although keloids may occur at any age, they tend to develop more rapidly during and after puberty. Epidemiology and age of onset of keloids have never been properly studied. 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 an earlobe keloid was the youngest. In another study, the age of onset of keloids was determined by taking keloid history from the patients. The age reported for the first keloid development in this study varies from 5 to 52 years of age, although most patients (50%) reported onset of their first keloid between 10 and 19 years of age. Similarly, when individuals with multiple keloids were asked to recall age of onset for each lesion, participants reported the majority of keloids (46%) appearing between 10 and 19 years.
Our own IRB approved keloid survey was launched in November 2011, with the goal of capturing detailed information about this disorder directly from patients [www.KeloidSurvey.com] . As of June 1, 2013, 990 patients with keloid disorder have completed this survey. 770 adult or parent responders have provided the age when they (or their child) developed their first keloid. The distribution of the age of onset of keloids from the survey is shown below. The average age of patients developing thier first keloid is around 16-17 year