Chlamydia comparison to Gonorrhea, BV, Yeast infection, and UTI.

Both conditions can be caused by sexual activity. Chlamydia typically occurs only with unprotected contact, [1] Chlamydia trachomatis https://www.mayoclinic.org/diseases-conditions/chlamydia/symptoms-causes/syc-20355349 unlike yeast infection.

Yeast infection, unlike chlamydia, can be caused many things other than sexual activity. Anything that changes the pH of the vagina can cause the fungal overgrowth of yeast infection, including recent antibiotic use, recent use of birth control pills with a high estrogen level, diabetes, and pregnancy.

This is a major differentiating factor. Yeast infection appears within a day or two after the inducing event; chlamydia takes 2–3 weeks to appear.

Vaginal yeast infection begins as an itch and redness of the vaginal opening that might progress, causing swelling and abundant white discharge. [10] Thrush in men and women https://www.nhs.uk/conditions/thrush-in-men-and-women/

Unlike yeast infection, chlamydia involves minimal itching and discharge. But chlamydia infection, if left untreated, can lead to painful intercourse, bleeding with sexual activity and between periods, or even pelvic inflammatory disease (PID), which can cause lower abdominal pain and infertility.

✓ Chlamydia discharge is whitish or colorless and scanty. It can be foul smelling. [4] Symptoms Chlamydia https://www.nhs.uk/conditions/chlamydia/symptoms/

✓ Vaginal yeast infection discharge is whitish and abundant and has the texture of cottage cheese. It too can be foul smelling. [9, 11] Vaginal Candidiasis
https://www.cdc.gov/fungal/diseases/candidiasis/genital/index.html
Yeast infection (vaginal)
https://www.mayoclinic.org/diseases-conditions/yeast-infection/symptoms-causes/syc-20378999

✓ Yeast infection is also called vaginitis (the suffix “itis” means infection). Unlike chlamydia, it can cause irritation, redness, and swelling of the vaginal opening.

✓ Chlamydia infection is also called cervicitis (it affects the cervix, which is the deeper part of the vagina), so usually there is no visible redness, or if there is, it is minimal.

Unlike BV, chlamydia is considered a sexually transmitted disease and is acquired only through unprotected sex (oral receiving or genital).
BV is caused by a vaginal pH imbalance, which can result from sexual activity and other non-sex-related events, including douching, recent use of antibiotics, using an IUD, and pregnancy.

However, sexual activity is the more common cause of BV, especially with new partner and condomless sex (it’s unclear why this is so). BV is more likely to be contracted through oral sex than genital contact, which is why it is more common among homosexual females. [12] Bacterial vaginosis https://www.nhs.uk/conditions/bacterial-vaginosis/

This is a significant differentiating factor. The average incubation period for BV is about 4 days; for chlamydia, it is 2 weeks. [2, 14] Chlamydia – CDC Basic Fact Sheet
https://www.cdc.gov/std/chlamydia/stdfact-chlamydia.htm
Bacterial Vaginosis – CDC Basic Fact Sheet
https://www.cdc.gov/std/bv/stdfact-bacterial-vaginosis.htm

Unlike chlamydia (which affects the cervix, deep in the body), BV affects the outer portion of the vagina, and for that reason produces more obvious vaginitis symptoms: itch around the vaginal opening, redness, and burning. It begins as a mild itch with clear, foul-smelling discharge. If left untreated, the itch intensifies and redness and swelling (of the vulva and vagina) worsen.

Cervicitis (chlamydia) causes fewer vaginal symptoms. It can start with minimal vaginal discharge or urinary symptoms (burning with urination, urgency, and frequent urination). Occasionally, the only symptom is bleeding between periods and with sexual activity.

Prolonged, untreated chlamydia can result in abdominal pain and can progress to PID.

BV produces a moderate amount of thin, whitish discharge, whereas chlamydia causes a transparent, scanty discharge. [3, 13] Chlamydia – CDC Detailed Fact Sheet
https://www.cdc.gov/std/chlamydia/stdfact-chlamydia-detailed.htm
Bacterial vaginosis
https://www.mayoclinic.org/diseases-conditions/bacterial-vaginosis/symptoms-causes/syc-20352279

Any vaginal discharge can be smelly, but certain conditions are well known to have a specific smell. BV is one of them; it has a fishy-smelling discharge. This odor is the result of the altered pH level in the vagina caused by the interaction between healthy vaginal bacteria and unhealthy bacteria.

Chlamydia discharge also can occasionally have a foul smell.

Unlike chlamydia, BV (if left untreated) causes significant redness and swelling of the vaginal opening.

Both conditions are sexually transmitted and can be caused by unprotected insertive vaginal and receiving oral sex. For the infection to incur, the vaginal and urethral mucosa need to be exposed to an infected partner’s bodily fluids, such as saliva, vaginal fluid, urethral fluid, or semen.

The incubation period for gonorrhea is much shorter than that of chlamydia, which means gonorrhea symptoms appear much sooner after exposure. On average, gonorrhea symptoms appear within a week and chlamydia symptoms appear within 2 weeks. [4, 17] Symptoms Chlamydia
https://www.nhs.uk/conditions/chlamydia/symptoms/
Gonorrhea – CDC Basic Fact Sheet
https://www.cdc.gov/std/gonorrhea/stdfact-gonorrhea.htm

The progression of these diseases—regardless of the area of the body affected—is very similar.

When the vaginal area is affected

When the urethral area is affected

✓ Chlamydia, unlike gonorrhea, causes a watery, transparent discharge. The amount of discharge is minimal, and sometimes the urethra must be squeezed for the discharge to be visible.

✓ Gonorrhea discharge is greenish, thick, and abundant (dripping).

✓ Chlamydia discharge, unlike gonorrhea discharge, can have a foul smell.

Both chlamydia and gonorrhea can cause redness and swelling of the affected areas:

The degree of swelling is usually more significant with gonorrhea, but this depends on the disease progression either condition. [19] Overview Gonorrhoea https://www.nhs.uk/conditions/gonorrhoea/

Unlike chlamydia, which is transmitted only via unprotected sex, UTI can be caused by sex (both protected and unprotected) and other things [22] Urinary tract infection https://www.cdc.gov/antibiotic-use/uti.html :

Unlike chlamydia, which has an average incubation period of two weeks, UTI symptoms can appear as early as the day after exposure. Some UTIs, however, can take 3–8 days to become apparent.

Both conditions can start as burning, urgency, and increased frequency of urination. However, there are differences:

Unlike chlamydia, UTI can cause cloudy, strong-smelling, and bloody urine.

Unlike UTI (which does not cause an unusual discharge), chlamydia can cause an abnormal vaginal or urethral discharge that is scanty, watery, and transparent.

Chlamydia can cause minimal swelling and redness of the vaginal and urethral openings, unlike UTI.