Box 1.

Systemic manifestations of sexually transmitted infections

< Hepatitis – secondary syphilis, Fitz–Hugh–Curtis syndrome, viral hepatitis (A,B,C)

< Arthritis – SARA, DGI

< Skin lesions – syphilis, HIV seroconversion, SARA, DGI

< Proctitis – LGV, chlamydia, gonorrhoea, herpes simplex virus types 1 and 2

DGI = disseminated gonococcal infection; LGV = lymphogranuloma venereum; SARA = sexually-acquired reactive arthritis.