This page is general health information, not medical advice. It cannot tell you whether you have an infection. A clinician can, and the testing options on this site are a good place to start.

Can you get an STD from kissing? Sometimes, yes. Most STDs are not spread that way, though. A cold sore on the lip is the case that causes the most confusion, so this guide walks through it one step at a time.

You will finish with a clear way to sort out which infections kissing can pass on, which it cannot, and what to do next in Orlando.

What you need before you start

This is a thinking-and-planning exercise, so the "materials" are simple.

A few minutes and a private place to think.
A note of any symptoms, such as a tingling spot, a blister, a sore, or a sore throat, and when it began.
A rough list of the kinds of contact involved: mouth to mouth, mouth to genitals, or contact with a sore.
Your insurance card, if you have one, and a picture ID if you plan to visit a clinic.
A phone to call a clinic and confirm details before you go.

Step 1: Understand what a cold sore is

A cold sore, also called a fever blister, is usually caused by herpes simplex virus type 1, or HSV-1. The CDC explains that HSV-1 is most often spread through oral-to-oral contact. That includes kissing.

So a cold sore is a form of oral herpes. Many people pick up HSV-1 in childhood from family members, long before any romantic or sexual contact. That is why a cold sore alone does not tell you anything about a person's sex life.

The CDC also notes that herpes can be passed even when no sore is visible. A person can spread the virus on days with no symptoms at all. A visible sore is not the only time kissing can pass it on.

Step 2: Know that oral herpes can reach the genitals

The CDC says HSV-1 can cause genital herpes when the mouth touches the genitals during oral sex. A cold sore, or the virus on the lips without a visible sore, can be the source.

This is the main link between cold sores and STDs. The kiss is not the problem by itself. The mouth can carry a virus that infects other skin it touches.

Herpes is not curable, but it is treatable and manageable. A clinician can prescribe medicine that can shorten outbreaks and lower how often they return.

Step 3: Sort the infections by how kissing affects them

Use this simple table as a map.

Infection	Can kissing pass it on?	What the CDC says
Oral herpes (HSV-1)	Yes	Spread mainly by oral-to-oral contact, including when no sore can be seen.
Genital herpes (HSV-2 or HSV-1)	Rarely by kissing alone	Usually spread by genital or oral-genital contact. Contact with any herpes sore is a risk.
Syphilis	Possible if there is a sore in or near the mouth	Spread by direct contact with a syphilis sore. Sores can appear on the lips or in the mouth.
HIV	Not through saliva	The CDC says HIV is not spread by saliva. Closed-mouth kissing carries no risk.
Chlamydia	Not usually	Spread through sex, not through kissing.
Gonorrhea	Not usually by kissing	Can infect the throat through oral sex.

If you came here asking whether you can get an STD from kissing, this table is the short answer. Herpes is the main one. Syphilis is possible with a sore. The others are linked to sexual contact, not to a kiss.

Step 4: Look at the HIV and kissing question separately

This question comes up often, so it gets its own step. The CDC says HIV is not spread through saliva, and closed-mouth kissing is not a way to get it.

The CDC describes open-mouth kissing as very low risk. It notes a small possible risk only if both people have sores or bleeding gums and blood is exchanged.

A cold sore does not change the HIV picture in a way that should send anyone into worry. If you have questions about HIV and your own situation, a clinician or a testing site can talk it through.

Step 5: Notice symptoms without trying to diagnose yourself

A sore on or near the mouth can have many causes. Cold sores are common. So are canker sores, which are not an STD at all. Irritation, allergies and injuries can also cause lip sores.

You cannot tell the cause by looking, and neither can a friend. Some features are worth showing to a clinician:

A sore that does not heal.
A sore that does not hurt, since the CDC notes a syphilis sore is often painless.
A rash on the hands, feet or body.
Sores or blisters on the genitals or anus.
A sore throat that lingers after oral sex.

Only a clinician or a test can say what a sore is. If you are unsure, getting it looked at is a reasonable choice.

Step 6: Decide what kind of visit makes sense

Herpes testing works differently from most STD tests. The CDC says a swab taken from a sore is the preferred way to test for herpes when a sore is present. The U.S. Preventive Services Task Force recommends against routine herpes blood screening in adults and adolescents who have no symptoms.

That means timing matters. If you have a sore now, a clinician can often swab it. If you have no sore, the clinician may talk with you about other tests that fit your situation.

For Orlando-area options, see the local testing list. A few notes from clinic sources:

Florida Department of Health in Orange County STD Clinic, 832 West Central Blvd, Orlando. The county STD clinic page describes low- or no-cost testing for chlamydia, gonorrhea, syphilis and HIV. It says the clinic is walk-in, first come first served, with picture ID required. Call 407-858-1400 for current hours. The page lists fees starting at $20 and says results take about one week. It does not list herpes testing, so ask when you call.
Hope & Help Center of Central Florida, 4122 Metric Dr, Winter Park, serves the Orlando area. Its testing page lists herpes among its tests and says no appointment is needed. The page has some copy errors, so call (407) 645-2577 to confirm which tests are offered.
Planned Parenthood East Orlando Health Center, 11500 University Blvd, Ste B. A CDC listing shows herpes testing and says an appointment is required. Call 407-246-1788 to confirm before you go.

Step 7: Plan how you will talk with partners

Many adults carry HSV-1 and never know it. A calm talk goes better than a tense one. You might say, "I get cold sores sometimes, so I avoid kissing or oral sex when I feel one coming on."

Some simple habits that the CDC lists for lowering herpes spread include:

Skipping kissing and oral sex while a sore or tingling is present.
Using condoms or dental dams, which lower the risk but do not remove it, since herpes can spread from skin the barrier does not cover.
Asking a clinician about daily medicine that can lower the chance of passing herpes to a partner.

These steps apply to every couple, whatever the genders or orientation.

Step 8: Think about prevention for other infections

Kissing is not the main way HIV, chlamydia or gonorrhea spread, but you may still want a prevention plan for sex. For HIV, a clinician can prescribe PrEP, a medicine that lowers the chance of getting HIV. You can read how it works in Orlando in this guide: PrEP in Orlando: how to get it, what it costs and who it is for.

The Florida Department of Health in Orange County also links a PrEP and PEP locator from its Area 7 HIV/AIDS Program page.

Tips for getting this right

Write down when a sore started and what it looked like. A phone photo can help a clinician.
Go while the sore is still there if you can. A swab works best on an active sore.
Call ahead. Clinic hours and tests change, and a short call saves a trip.
Bring a picture ID if you visit the county clinic.
Ask about cost before you go. The county clinic page says fees start at $20, and Hope & Help's page says income-based self-pay options can be arranged.
If you are under 18, Florida Statute 384.30 says a parent's consent is not required for an exam or treatment for a sexually transmissible disease. The same statute says the visit is confidential.

Common mistakes to avoid

Assuming a cold sore means a partner was unfaithful. HSV-1 is often picked up in childhood, and many people carry it without symptoms.
Assuming no sore means no risk. The CDC says herpes can spread when no sore is visible.
Treating every mouth sore as the same thing. Cold sores, canker sores and syphilis sores look different to a clinician, and you cannot sort them by sight.
Waiting for the sore to heal before asking for help. A swab is most useful when a sore is present.
Worrying about HIV from a kiss. The CDC says saliva does not spread HIV.
Skipping a conversation with a partner out of embarrassment. Herpes is common, and talking about it is a normal part of sexual health.

What to expect afterward

Results and outcomes vary from person to person. Here is what may happen after you follow these steps.

You may have a clearer sense of which infections kissing can and cannot pass on.
You may feel more ready to describe a sore to a clinician, and to ask which tests fit your situation.
If a clinician diagnoses herpes, they may talk with you about medicine that could shorten outbreaks or lower the chance of passing it to a partner. Many people with herpes live with few or no outbreaks.
If a clinician diagnoses a bacterial infection such as syphilis, the CDC says it is curable with treatment from a clinician.

A cold sore is common and manageable. It is worth knowing the facts, and a clinician can help with the rest.

Cold Sores, Kissing and STDs: What's Connected and What Isn't