Jarisch Herxheimer reaction is commonly seen in:
A i.e. Early syphilis Jarisch - Herxheimer - Reaction, consisting of fever & constitutional symptoms may follow the treatment of syphilisQ most commonly in secondary syphilis > primary syphilis > Early latent syphilis.
Early syphilis
Late congenital syphilis
Latent syphilis
Syphilis of cardiovascular system