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Health Library

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Allergic reaction

An allergic reaction is an overreaction of the immune system to a substance called an allergen. Allergens include chemicals, foods, medicines, mold, plants, and pollen.

Symptoms of an allergic reaction can range from mild and annoying to severe and life-threatening.

  • Allergens can affect different tissues in the body, such as the airways, eyes, gastrointestinal tract, nose, lungs, and skin.
  • Some allergic reactions, such as hives or itching around an insect bite or where a plant or chemical touched the skin, affect only one area of the body.
  • Other allergic reactions may affect the whole body, causing itching all over, swelling, fainting, belly pain, nausea, vomiting, or difficulty breathing.
  • A severe allergic reaction (called anaphylaxis) can lead to shock and even death.

Allergic reactions may not occur the first time a person is exposed to an allergen. A person may become more sensitive to the allergen with each exposure.

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COVID-19 Update

Telemedicine visits are now available. Please call our office at (585) 641-0399 to book your appointment, or request an appointment online today!

Genesee Valley Obstetrics & Gynecology, P.C. is closely following the most up-to-date announcements and information on the known cases of Novel Coronavirus (COVID-19). Because this information is always changing, we will be monitoring all updates from the World Health Organization and Centers for Disease Control.

If you are or your anyone in your family is experiencing cold or flu symptoms, or have travelled outside the country recently (in the last 14 days), please make sure to contact us via phone prior to your appointment. You may also contact us for any additional questions by calling our office at (585) 641-0399.

Here are a few additional resources as well:

World Health Organization
Centers for Disease Control

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