Affects 20% of the normal population
Unclear etiology. Common triggers: stress, hormonal changes, smoking, certain food such as coffee, chocolate.
Resolve spontaneously in 10-14d
Aphthous stomatitis
Angioedema
Chancroid
Chlamydia conjunctivitis
Herpes gingivostomatitis
Gonorrheal conjunctivitis
Herpes labialis
Impetigo