The disease is transmitted by skin-to-skin contact with an infective lesion, with the bacterium entering through a pre-existing cut, bite, or scratch. Early (primary and secondary)<unk>  lesions have a higher bacterial load, thus are more infectious. Both papillomas and ulcers are infectious. Infectivity is thought to last 12–18 months after infection, longer if a relapse occurs. Early<unk>  lesions are often itchy, and more lesions may form along lines that are scratched.<unk>  may be evolving less conspicuous lesions.<unk>  is most common among children, who spread it by playing together. It is not thought to be transmitted from mother to child in the womb.<unk>  is not a venereal disease. T. pallidum pertenue has been identified in nonhuman primates (baboons, chimpanzees, and gorillas) and experimental inoculation of human beings with a simian isolate causes<unk> -like disease. However, no evidence exists of cross-transmission between human beings and primates, but more research is needed to discount the possibility of a<unk>  animal reservoir in nonhuman primates.
Yaws
Enanthem
Scrubs 
Exanthem
Chilblains
Tuberculosis hut
Scabies
Saddle sore