Syphilis is a chronic venereal disease, which affects the skin, mucous membranes, internal organs, bones and nervous system. The disease is caused by a bacterium Treponema pallidum. Outside the human body treponema is highly unstable and quickly dies after a contact with soap or alcohol. Treponema dies at a temperature above 48 degrees during 30 minutes. Treponema pallidum may penetrate the human organism even through subtle skin injuries or mucous membranes, which leads to the disease called syphilis.
There are four stages of syphilis. Different symptoms correspond to different stages of syphilis. Let’s review them in turn.