What is the difference between a food allergy and a food intolerance?

Here's the difference between food allergy and food intolerance:

• Food Allergy: This is an immune system reaction to a specific food protein. Even a tiny amount of the food can trigger a rapid and potentially severe reaction, such as hives, swelling, difficulty breathing, or anaphylaxis. The immune system mistakenly identifies a harmless food protein as a threat.
• Food Intolerance: This is a digestive system reaction to a food, not involving the immune system. It occurs when the body has difficulty digesting a particular food or an ingredient in it, often due to a lack of an enzyme (e.g., lactase for lactose intolerance). Symptoms are usually less severe and typically limited to digestive issues like bloating, gas, or diarrhea, and often depend on the amount of food consumed.