<unk>  is common throughout the world. A large survey of young adults on six continents reported that 33% of males and 28% of females had<unk>  on two or more occasions during the year before the study. The lifetime prevalence in the United States of America is estimated at 20–45% of the adult population. Lifetime prevalence in France was reported by one study as 32% in males and 42% in females. In Germany, the prevalence was reported at 32% in people aged between 35 and 44 years, and 20% in those aged 65–74. In Jordan, another study reported a lifetime prevalence of 26%.
Herpes labialis
Impetigo
Lentigo simplex
Infectious mononucleosis
Herpes simplex
Aphthous stomatitis
Tinea faciei
Herpangina