Why do I get itchy when eat sugar or fruit?

Itchiness or hives after eating sugar or fruit is most likely caused by an allergic reaction. Allergies occur when the body's immune system overreacts to a foreign substance, such as certain proteins or chemicals found in certain fruits or sugars. When this happens, the body releases histamine and other chemicals that can cause symptoms such as itchiness, skin rashes, swelling, and in some cases, difficulty breathing.

Here are a few potential reasons why you might experience itchiness after consuming sugar or fruit:

1. Fruit Allergy: Some people may have an allergy to specific fruits, such as strawberries, peaches, apples, or bananas. The proteins in these fruits can trigger the release of histamine and other allergy symptoms, including itchiness.

2. Sugar Intolerance: While rare, some individuals may have an intolerance to certain types of sugar, such as fructose, which is found in many fruits and sweeteners. This can lead to symptoms like bloating, gas, diarrhea, and sometimes, skin reactions such as itchiness.

3. Oral Allergy Syndrome (OAS): OAS is a condition where people who have pollen allergies also develop an allergic reaction to certain fruits or vegetables that are botanically related to the pollen they're allergic to. For instance, if you have a birch pollen allergy, you might develop OAS to apples, peaches, and cherries.

4. Contact Dermatitis: In some cases, itchiness may be caused by direct contact with the skin rather than ingestion. This can occur if you have an allergy to the peel or surface of a fruit. For example, some people may experience itchiness if they touch the skin of certain fruits like mangoes or kiwis.

It's important to note that not everyone who consumes sugar or fruit will experience itchiness. If you're experiencing persistent itching or hives after eating specific foods, it's advisable to consult a healthcare professional to determine the exact cause and receive appropriate treatment or management advice. An allergy test may be recommended to identify the specific allergens responsible for your symptoms.