painful urination, lower abdominal pain, vaginal discharge
in women, discharge from the penis
in men, or testicular pain
in men. The usual treatment is antibiotics and infection resolves within one to two weeks. However, one study shows that there is an increased risks of chlamydia reinfection in both males and females in their 20s. (http://sti.bmj.com/cgi/content/abstract/77/1/33)
On the other hand, itching and reddish rash at the tip of of the penis are symptoms of yeast infection in males.