(i) Two common sexual diseases are syphilis and gonorrhea.
(ii) Both are caused by bacteria.
(iii) Symptoms of syphilis are chancre (patches) on various parts of the body including genitals, rash, fever, inflammation of joints, alopecia etc.
(iv) Symptoms of gonorrhea are painful and burning sensation during urination, oozing of pus through penis and vagina, inflammation of urinary tract, anus, throat, eyes, etc.