Symptoms of Common STIs (2024)

Sexually transmitted infections (STIs), of which there are many, have a varied set of symptoms. It's possible that you may experience genital itching, discharge, pain, skin changes, or other symptoms—or even none at all.

In fact, some of the most serious infections produce no signs or symptoms until significant damage has occurred, which puts both the person affected and their partner(s) at risk.

Only a healthcare professional can confirm whether or not you have an STI. If you think you could have been exposed to an STI,it is important to go and get tested—whether you have symptoms or not.

Frequent Symptoms

Symptoms associated with STIs overlap with those of other conditions, which further stresses the importance of proper testing.

See a healthcare provider if you have any of the following symptoms of STIs.

Discharge

Unusual liquids (discharge) from the vagin* or tip of the penis can be a symptom of certain STIs, including:

• Chlamydia
• Gonorrhea
• Non-gonococcal urethritis
• Trichom*oniasis
• Bacterial vaginosis
• Lymphogranuloma venereum

vagin*l discharge is not the same as normal vagin*l lubrication; all women have some discharge. It's only when abnormal/unusual discharge is present that it may signal an STI.

Urethral discharge is pus or other fluids coming out of the tip of the penis.

Odor

Changing vagin*l odor is often a sign that you may have acquired a vagin*l infection. Some infections that cause the vagin* to smell unpleasant are:

• Trichom*oniasis
• Bacterial vaginosis

Itching

STI-associated itching is usually around the genitals. The area around the anus may also itch because of an STI.

STIs that cause itching include:

• Chlamydia
• Trichom*oniasis
• Bacterial vaginosis
• Pubic lice
• Scabies
• Herpes
• Lymphogranuloma venereum
• Molluscum contagiosum
• Mycoplasma genitalium

Painful Intercourse

Pain during sex may be a sign of an STI. It may also be a sign of certain non-infectious conditions. New or unusual pain during sex should always be discussed with a healthcare provider.

STIs that can cause pain during sex include:

• Chlamydia
• Trichom*oniasis
• Chancroid
• Herpes
• Mycoplasma genitalium

Painful Urination

If it hurts when you pee, you may have an STI, such as:

• Chlamydia
• Gonorrhea
• Non-gonococcal urethritis
• Trichom*oniasis
• Bacterial vaginosis
• Mycoplasma genitalium
• Chancroid
• Herpes

Lumps, Bumps, Sores, and Ulcers

Not all lumps and sores are infectious, but many are. Some STIs that cause genital ulcers and other bumps or sores are:

• Syphilis
• Chancroid
• Herpes
• Lymphogranuloma venereum
• Molluscum contagiosum

Genital warts are a common symptom of HPV. Warts may also appear in the mouth and throat.

Pain

As with other infections, some STIs can be painful. Where they hurt depends on the site that has been infected, which may be the vagin*, anus, lower abdomen, or throat.

STIs that are sometimes associated with pain include:

• Chlamydia
• Gonorrhea
• Trichom*oniasis
• Chancroid
• Herpes
• Lymphogranuloma venereum
• Mycoplasma genitalium

Visible Infestation/Parasites

This would occur with:

• Pubic lice
• Scabies

Rare Symptoms

Rashes are a relatively uncommon STI symptom. They can, however, be caused by:

• Syphilis
• HIV (associated with Kaposi’s sarcoma)
• Scabies

No Symptoms

For many people, an STI can have no symptoms at all. STIs that are commonly asymptomatic include the following.

• Chlamydia
• Gonorrhea
• Non-gonococcal urethritis
• Lymphogranuloma venereum
• Mycoplasma genitalium
• Syphilis
• Trichom*oniasis
• HIV
• Herpes
• Hepatitis B
• Hepatitis C

Take note that most of these are also listed above, only reinforcing how their presentation cannot be guaranteed.

Complications

Left untreated, STIs can cause long-term health problems. Possible complications include:

• Reproductive health problems, including infertility
• Pelvic inflammatory disease (PID) and pelvic pain
• Pregnancy complications
• Certain cancers, such asHPV-associated cervical and rectal cancers
• Heart disease
• Eye inflammation

Pregnancy Risks

STIs can be transmitted from mother to baby during pregnancy and increase the risks of pregnancy complications, including miscarriage, stillbirth, and birth defects.

For example, syphilis passed from mother to child, known as congenital syphilis, can cause deformed bones, severe anemia, enlarged liver and spine, jaundice, blindness, deafness, meningitis, and skin rashes.

In addition, some STIs, such as chlamydia, gonorrhea, and herpes can be transmitted to the newborn during delivery and can lead to eye infections, lung infections, and other health issues.

When to See a Healthcare Provider

If you have any of the above STI symptoms, have had intimate contact with an infected partner, or engaged in risky sexual behaviors, see a healthcare provider to get tested.

While there is a lot of unfortunate stigma associated with having an STI, it is important to talk openly with your healthcare provider. Keep in mind that their only interest is to make sure that you are well. Details about your symptoms (if any), your sexual history, how you have sex, and the extent to which you protect yourself can be very helpful in the diagnosis process.

STI testing is often covered by insurance or available at afree clinic. It can involve a physical examination, blood work, urinalysis, and cell sample analysis.

The Centers for Disease Control and Prevention (CDC) recommends routine STI screening for all pregnant women and repeat testing for women at high risk for STIs, regardless of whether or not there are symptoms present.

A Word From Verywell

Treating an STI in its early stages can prevent transmission of the infection and prevent serious complications. And recognizing symptoms, if present, can be helpful when it comes to prompting you to get evaluated sooner than later.

But remember: A lack of symptoms does not mean you are necessarily STI-free. If you may be at risk, talk to your healthcare provider about getting tested or visit an STI clinic.

Do not assume your healthcare provider automatically tests for STIs as part of an annual physical or gynecological exam. Some don't.