Typical features of episcleritis
Episcleritis commonly presents as an acute onset of localized erythema and discomfort without significant pain. It affects women in two-thirds of cases, is bilateral at some point over the course of disease in 50%, and is associated with a systemic autoimmune disorder in 30%. Tends to have a good prognosis, typically resolving in 2 to 3 weeks without complications but may recur at 1 to 3-month intervals for several years in up to 60%. Rarely progresses to scleritis (∼5%).