South Louisiana Medical Associates
Call

Heart, Blood & Circulation

Allergic Reactions and Anaphylaxis in Houma & South Louisiana

Learn the symptoms, causes, testing and treatment options for allergic reactions and anaphylaxis, and find SLMA providers in Houma, Thibodaux and South Louisiana who can help.

Allergy

Allergy

An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are:

Normally, your immune system fights germs. It is your body's defense system. In most allergic reactions, however, it is responding to a false alarm. Genes and the environment probably both play a role.

Allergies can cause a variety of symptoms such as a runny nose, sneezing, itching, rashes, swelling, or asthma. Allergies can range from minor to severe. Anaphylaxis is a severe reaction that can be life-threatening. Doctors use skin and blood tests to diagnose allergies. Treatments include medicines, allergy shots, and avoiding the substances that cause the reactions.

Source: MedlinePlus: Allergy

Anaphylaxis

Anaphylaxis

Anaphylaxis is a serious allergic reaction. It can begin very quickly, and symptoms may be life-threatening. The most common causes are reactions to foods (especially peanuts), medications, and stinging insects. Other causes include exercise and exposure to latex. Sometimes no cause can be found.

It can affect many organs:

  • Skin - itching, hives, redness, swelling
  • Nose - sneezing, stuffy nose, runny nose
  • Mouth - itching, swelling of the lips or tongue
  • Throat - itching, tightness, trouble swallowing, swelling of the back of the throat
  • Chest - shortness of breath, coughing, wheezing, chest pain or tightness
  • Heart - weak pulse, passing out, shock
  • Gastrointestinal tract - vomiting, diarrhea, cramps
  • Nervous system - dizziness or fainting

If someone is having a serious allergic reaction, call 911. If an auto-injector is available, give the person the injection right away.

Source: MedlinePlus: Anaphylaxis

Health information on this page is from MedlinePlus, a service of the U.S. National Library of Medicine (NLM), National Institutes of Health. Retrieved 09/25/2026. NLM does not endorse SLMA or any SLMA service. This information is for education and is not a substitute for advice from your healthcare provider.

See all providers ›

Providers shown change on each visit.

From SLMA

Related News & Health Topics

Health topic guides

  • Primary Care

    Hypertension

    High blood pressure can gradually affect the heart, blood vessels, kidneys, brain, and other organs. SLMA provides evaluation, treatment, medication management, and ongoing prim...

    Learn more ›
  • Primary Care Sports Medicine

    Sports EKGs

    A sports EKG records the electrical activity of an athlete’s heart and may help identify rhythm abnormalities or other findings that deserve further evaluation. SLMA provides sp...

    Learn more ›
  • Chronic Conditions & Preventive Care

    Diabetes and High Blood Sugar

    Learn the symptoms, causes, testing and treatment options for diabetes and high blood sugar, and find SLMA providers in Houma, Thibodaux and South Louisiana who can help.

    Learn more ›

News and articles

See all news ›

Online scheduling

Schedule Your Visit
With an SLMA Provider

Book online through your clinic's patient portal.

  • Book online

    Schedule through your clinic's patient portal, any time.

  • Provider choice

    See the SLMA provider, specialty or clinic that fits your needs.

  • Coordinated care

    Primary care and specialists work within one medical group.

A woman using her phone to book an appointment

Ready to be seen by an SLMA provider?

Book online through your clinic's patient portal.

Schedule Your Visit

SLMA Clinics

Book NowCallLocations