How is Sulfite Sensitivity diagnosed?

Sulfite sensitivity, also known as sulfite intolerance, is a condition where individuals experience adverse reactions to sulfites, which are commonly used as preservatives in various foods and medications. The diagnosis of sulfite sensitivity involves a combination of medical history, physical examination, and specific tests.

Medical history: The first step in diagnosing sulfite sensitivity is a detailed medical history. The healthcare provider will ask about the symptoms experienced after consuming sulfite-containing foods or medications. Common symptoms include difficulty breathing, wheezing, chest tightness, flushing, hives, and gastrointestinal disturbances.

Physical examination: A physical examination may be conducted to assess the presence of any physical signs related to sulfite sensitivity. This may include examining the skin for rashes or hives, listening to the lungs for any abnormal sounds, and checking for other allergic symptoms.

Specific tests: To confirm the diagnosis, specific tests may be performed. These tests can include:

• Sulfite challenge test: This test involves administering sulfites under controlled conditions to observe any allergic reactions. It is typically performed in a hospital or clinic setting where emergency medical care is readily available.


• Food diary: Keeping a detailed record of the foods consumed and any associated symptoms can help identify patterns and potential triggers.


• Skin prick test: In this test, small amounts of sulfite extracts are applied to the skin, and the skin is then pricked to allow the allergen to enter. If a person is sensitive to sulfites, a localized allergic reaction, such as redness or swelling, may occur.


• Blood tests: Blood tests can measure the levels of specific antibodies, such as immunoglobulin E (IgE), which are associated with allergic reactions. Elevated levels of sulfite-specific IgE antibodies may indicate a sulfite sensitivity.

It is important to note that the diagnosis of sulfite sensitivity can be challenging as the symptoms can overlap with other conditions. Therefore, it is crucial to consult with a healthcare professional who specializes in allergies or immunology for an accurate diagnosis.