10. Cardiovascular Syphilis
A second problem of not treating the infection as soon as possible and ignoring early signs of the syphilis is that it could infect your cardiovascular system. This can lead to a variety of life-threatening complications. The most serious side effect of this infection is cardiovascular syphilis. This symptom may result in blood vessels narrowing. This can lead to aneurysms and valve damage.
All of these can lead to heart failure. The damage done to the body by cardiovascular syphilis is irreversible. The damage has already been done, even though the infection is still treatable with penicillin. This is another symptom of syphilis that can occur if it is not treated for a prolonged period of time.