Gonorrhea is caused by Neisseria gonorrhoeae, and is transmitted sexually. The bacteria can infect genitals, throat, eyes or rectum. In men and women, gonorrhea can lead to sterility. Women can infect their infants during delivery. Syphilis is caused by the bacterium Treponema pallidum, and is transmitted sexually or from contaminated blood.
Mothers can pass the disease to infants during pregnancy.
Glands in the area of infection typically are swollen. Genital or oral areas are the most common infection sites. A sparse, clear discharge from the urethra, redness and irritation are common symptoms. Without treatment, an infection may last years. In men, a yellow discharge from the urethra, painful urination and blood in urine may result.