Epidemiology
The cases of this condition are most common between the spring and autumn months in the northern hemisphere.
Typically, 5-20% of fair skinned populations are affected, but it can occur in any skin type. It is more common in females than in males. The condition can affect all ethnic groups and research suggests that 20% of patients have a family history of the complaint. Those suffering from PLE usually do so by age 30.
Read more about this topic: Polymorphous Light Eruption