Itchy Mouth: Causes, Treatment, And Prevention - Medical News Today

Maybe your like

Medical News TodaySubscribeWhat to know about an itchy mouth

Medically reviewed by Shilpa Amin, M.D., CAQ, FAAFP, MSCP — Written by Jamie Eske on August 7, 2019

Causes
Treatment
When to see a doctor
Diagnosis
Prevention
Outlook

An itchy mouth may be a symptom of viral or fungal infections. It also frequently occurs during allergic reactions.

Itchiness within the mouth can range from mild to severe, depending on the underlying issue.

In this article, we explore the causes of an itchy mouth. We also describe treatment options, strategies for prevention, and when to see a doctor.

Causes

Several conditions can cause itchiness within the mouth, including the following:

Oral allergy syndrome

a man with an itchy mouth seeing a dentist. — A person with an itchy mouth may have a viral or fungal infection or an allergy.

Oral allergy syndrome (OAS) is a type of food allergy that affects the mouth, lips, tongue, and throat. It occurs in people with pollen allergies.

OAS can, for example, cause a person with hay fever — or allergic rhinitis — to experience an allergic reaction to apples or celery.

Proteins in specific foods can be very similar to proteins in certain pollens. In a person with OAS, the body reacts to proteins in these foods as though they were proteins in pollen allergens. This misidentification could result in a new allergic reaction or cause existing allergy symptoms to intensify.

According to the American Academy of Allergy, Asthma & Immunology, OAS affects 50–75% of adults who are allergic to birch tree pollen.

Tingling and itching in the mouth are among the most common symptoms of food allergies, according to a 2015 small-scale review.

Other symptoms of OAS can include:

a scratchy throat
red, itchy bumps called hives that develop in the mouth or throat
swelling of the lips, tongue, or throat

Foods that can cause OAS reactions include:

nuts
apples
celery
legumes
fish and shellfish
eggs
cow’s milk
soy
wheat

Learn more about the causes and symptoms of OAS here.

Anaphylaxis

woman holding her head and wondering why am i dizzy — A person with anaphylaxis may experience dizziness, a rapid heartbeat, and nausea.

Anaphylaxis is another allergic reaction, but it is far more serious than OAS and requires immediate medical attention. People are at risk of anaphylaxis when their immune system becomes hypersensitive to acute allergens, such as bee stings, pollen, and certain foods.

Anaphylaxis affects the entire body and can cause low blood pressure and severe swelling. The dramatic drop in blood pressure can starve the organs and tissues of oxygen.

The swelling can affect the mouth and throat, making it difficult or even impossible to breathe.

Symptoms of anaphylaxis include:

itching or tingling of the mouth and throat
hives
dizziness
rapid heartbeat
nausea or vomiting
difficulty breathing
loss of consciousness

Viral infection

Viruses that attack the upper respiratory tract, such as those responsible for the common cold or flu, can cause an itchy mouth.

When a person gets a viral infection, the immune system sends specialized cells to capture and destroy the invading pathogens.

The buildup of immune cells can lead to inflammation and congestion, which can cause the roof of the mouth and the throat to feel itchy.

Viral infections can cause the following symptoms:

a sore throat
a runny nose
sneezing
headaches
hoarseness
a fever
swollen lymph nodes

Oral thrush

Oral thrush is a fungal infection that occurs due to an overgrowth of Candida yeasts in the mucous membranes that line the mouth and throat.

Oral thrush causes thick, cream-colored patches on the tongue, inner cheeks, roof of the mouth, and throat. People may experience itching, burning, or general discomfort in the affected areas.

Other symptoms of oral thrush include:

dry mouth
soreness in the affected areas
loss of taste
pain while eating or swallowing

The Centers for Disease Control and Prevention (CDC) state that the following factors can increase a person’s risk of developing oral thrush:

wearing dentures
smoking
taking antibiotics
taking corticosteroids, including those in asthma inhalers
having diabetes
having a weakened immune system

Here, find out more about oral thrush, including home remedies that can help.

Treatment options

Treatment options for an itchy mouth vary depending on the cause.

Treatments for allergic reactions

A mild allergic reaction may clear up on its own, either after the person spits out the food that is causing the reaction or once their body has finished digesting the allergenic proteins.

People can also take medications called antihistamines to treat symptoms such as:

congestion
sneezing
itching
hives

A severe allergic reaction, such as anaphylaxis, requires immediate treatment. A person having a severe reaction can self-administer medication using an epinephrine auto-injector, sometimes called an EpiPen.

Epinephrine is a hormone that increases blood flow and relaxes the smooth muscles, which opens up the airways, helping a person breathe.

Treatments for oral thrush

A doctor is likely to prescribe or recommend antifungal medications to treat oral thrush. Some examples include:

clotrimazole (Canesten)
miconazole (Monistat)
nystatin (Mycostatin)
fluconazole (Diflucan)

When to see a doctor

Anyone who thinks that they have an infection in their mouth should see a doctor.

If a person thinks that they could have a particular allergy, they can schedule an allergy test. During this test, a healthcare professional will scratch or prick the skin and introduce a small sample of the allergen into the area. If the person is allergic to the substance, their body will react.

Diagnosis

Allergy tests help identify specific allergens to avoid. A doctor can use the results to make a diagnosis and, possibly, prescribe epinephrine.

Learn more about epinephrine here.

A physical examination and a culture test help a doctor diagnose oral thrush. During a culture test, a doctor often uses a cotton swab to collect a small sample from the patches in the mouth, which goes to a laboratory for analysis.

The doctor may also request a blood test to rule out any underlying conditions.

Prevention

Share on Pinterest

A person might be able to prevent an itchy mouth by rinsing the mouth after using corticosteroid inhalers.

People can prevent allergic reactions by avoiding known allergens.

Preventing oral thrush can involve improving oral hygiene and making some lifestyle changes, such as:

removing dentures at night
rinsing the mouth after using corticosteroid inhalers
brushing and flossing the teeth regularly
quitting smoking or avoiding secondhand smoke

Outlook

An itchy mouth often results from a mild food allergy or an infection.

In the case of an allergy, the itchiness usually goes away when a person stops eating the food responsible for the reaction.

However, an itchy mouth can also be a symptom of a more severe and sometimes life threatening allergic reaction called anaphylaxis. Anyone experiencing anaphylaxis will need immediate medical treatment.

Allergy
Food Allergy
Infectious Diseases / Bacteria / Viruses

How we reviewed this article:

SourcesMedical News Today has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

Candida infections of the mouth, throat, and esophagus. (2019).https://www.cdc.gov/fungal/diseases/candidiasis/thrush/index.html
Kashyap, R. R., & Kashyap, R. S. (2015). Oral allergy syndrome: An update for stomatologists.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4655061/
Moriyama, T. (2015). Diversity of food allergy.https://www.jstage.jst.go.jp/article/jnsv/61/Supplement/61_S106/_pdf
Oral allergy syndrome (OAS) or pollen fruit syndrome (PFS). (n.d.).https://www.aaaai.org/conditions-and-treatments/library/allergy-library/outdoor-food-allergies-relate

Share this article

Medically reviewed by Shilpa Amin, M.D., CAQ, FAAFP, MSCP — Written by Jamie Eske on August 7, 2019

Latest news

AI platform and blood test may better predict diabetes risk
Shingles vaccine may help slow biological aging, study finds
Text reminders may help heart failure patients avoid readmission
Obesity may be a key risk factor for vascular dementia, study says
Which types of physical activity may help prolong life span?

Related Coverage

Hives in the mouth: What to knowMedically reviewed by E. Mimi Arquilla, DO
Hives in the mouth can be the result of a reaction to an irritant, or a symptom of oral allergy syndrome. Learn more about the causes.
READ MORE
Dry skin around the mouth: Causes and remedies
The skin around the mouth may become dry because of allergies, skin conditions, or irritants, including certain products. Learn more about the causes…
READ MORE
Xolair food allergy treatment
Xolair is a prescription drug used to treat food allergies and other conditions. Learn more about the drug, how it works for food allergies, its…
READ MORE
Rare food allergy may affect more children than previously thought
Researchers are reporting that food allergies such as eosinophilic esophagitis can "march" through some children
READ MORE
Eosinophilic esophagitis: How the drug Dupixent has improved treatment
Experts say the approval of Dupixent to treat eosinophilic esophagitis has made treatment for this condition easier for older children and adults
READ MORE

Tag » Why Is My Mouth Itchy

Health Conditions

Health Products

News

Original Series

Podcasts

General Health

Health Tools

Quizzes

About Medical News Today

Find Community

Follow Us