Roughly only 25 percent of women will show any symptoms. These include pain in the lower abdomen and lower back, bleeding between periods, pain during sex, and the likelihood of vaginal discharge. Often it is not uncommon for the woman to suffer a fever accompanied by nausea as a reaction to the body fighting the infection. Left untreated, the condition can spread to the fallopian tubes and often leads to pelvic inflammatory disease, or PID, which can result in infertility over time. 

Fifty percent of men are likely to show signs of the sexually transmitted infection. Most common symptoms for men include some penile discharge and burning while urinating. The head of the penis may itch and become red and swollen and tender to the touch. Ejaculation may also be a painful process for the male, which usually results in a trip to the physician. Left untreated in the male, the infection can spread to the epididymis and cause a condition known as epididymitis. This condition carries with it a feeling of heaviness around the testicles, continued burning on urination, and may infect fertility if left untreated.

It is also important to note that Chlamydia can also infect the throat if oral sex is performed on a person who is infected with the disease. Signs of this are usually painful throat inflammation, fever, and a general feeling of malaise. It has also been found to be able to cultivate in the rectum, which leads to pain and discharge from the area. There have been many cases of the infection taking hold in the eye, generally when a child passes through the birth canal of an infected but undiagnosed mother. 

Signs and symptoms of chlamydia, should they appear at all, usually begin at one to three weeks after contracting the sexually transmitted disease. They are very mild and are easy for the person to miss, though they will steadily progress for the individual over time. While the disease itself may not always exhibit signs of infection, it is important to note that secondary infections caused by the condition will indeed result in symptomatic presentation. This is usually how the infection is found. 

The treatment for chlamydia is very simple, with antibiotics being the mainstay for curing. Having the infection once does not make a person immune as it is caused by bacterium that can be reintroduced to the body. Should anyone believe they have been in contact with a partner that may have the disease, they should see a physician regardless of whether or not they are showing signs of acute infection. This illness does not cure itself.