eMedicine - Syphilis : Article by Todd A McGregor 

Syphilis is an infectious disease caused by the spirochete Treponema pallidum. It almost always is transmitted by sexual Treponema pallidum, T pallidum, primary syphilis, secondary syphilis, early latent syphilis, late latent syphilis,

Syphilis 

Syphilis is an STD that, if it goes untreated, can lead to serious health problems. stds, sexually transmitted diseases, rashes, joint problems, joint pains, disordered thinking, disordered thoughts, congenital syphilis, acquired syphilis, pregnancy, pregnant woman, unborn baby, primary stages, secondary stages, late stages, primary syphilis, secondary syphilis, late syphilis, fevers, headaches, loss of appetites, brain, eyes, vision, spreading to other organs, bacterial infections, treponema pallidum, penicillin, antibiotics, antibiotic medication, medicines, blood tests, sexually active, hiv, aids, contagiousness, STDs, sexually transmitted diseases, adolescence, adolescent medicine