Skin symptom of the secondary stage of syphilis. Kinically, it is a non-pruritic, monomorphic macular exanthema due to infectious-toxic vascular reactions(roseola syphilitica). Syphilitic roseolae are signs of hematogenous dissemination of the syphilitic infection.
The clinical appearance of "Roseola syphylitica" is not specific. Similar exanthema may also occur in other infectious diseases. In typhoid abdominalis, "roseolae of the abdominal skin" are signs of septic settling of the pathogens. The exanthema is regularly accompanied by other septic organ involvement (in typhoid fever with septic fever continua, splenomegaly, intestinal involvement).
Examples of infections with exanthema under the picture of roseolae are: