Why do allergies get worse when you drink alcohol?

Several reasons why allergies may worsen when you drink alcohol:

1. Dehydration: Alcohol is a diuretic, meaning it causes your body to lose water. Dehydration can lead to more concentrated histamine levels in the body and dry, itchy skin, worsening allergy symptoms.

2. Increased histamine release: Alcohol can stimulate the release of histamines, the chemicals in the body that cause allergy symptoms such as sneezing, runny nose, and itchy eyes.

3. Immune system suppression: Alcohol can temporarily weaken the immune system, making it less effective at fighting off allergens and increasing the likelihood of an allergic reaction.

4. Cross-reactivity: Some alcoholic beverages, particularly beer and wine, contain ingredients such as barley, wheat, or grapes that may cross-react with certain allergens like pollen or dust mites. This can trigger allergic symptoms in individuals with allergies to those substances.

5. Sulfites: Some alcoholic beverages, particularly wine, may contain sulfites, preservatives known to cause allergic reactions in some individuals.

6. Medications: If you're taking certain medications to manage your allergies, alcohol may interfere with their effectiveness or interact negatively with them, worsening allergy symptoms.

7. Vasodilation: Alcohol can cause blood vessels to dilate, which can worsen symptoms such as facial flushing and nasal congestion.

It's important to identify and avoid trigger foods and substances, including alcohol, to manage allergies effectively. If your allergies worsen or you experience severe symptoms after consuming alcohol, consult your healthcare provider for proper diagnosis and management.