A wide range of symptoms, and chronic conditions, manifest, such as:
- Gastrointestinal: Bloating, abdominal cramping, excessive flatulence, constipation and/or diarrhea, Irritable bowel syndrome, Crohn’s disease.
- Respiratory: Wheezing, asthma, sinusitis.
- Musculoskeletal: Osteo and rheumatoid arthritis, joint pain, muscle aches, fibromyalgia.
- Dermatological: Urticaria, psoriasis, itchy skin, atopic dermatitis, acne, rosacea.
- Neurological: Migraine, headache, impaired concentration, mood and behavioral changes, autism, anxiety, fatigue, hyperactivity.
Unlike food allergy which is a rapid, often severe, and an occasionally life-threatening, immune response to consumption of a specific food, a food intolerance will develop over time and symptoms will appear as the immune system struggles to break down the immune complexes which accumulate in the body.
Although not life-threatening, food intolerance can have a significant effect on a patient’s quality of life, and it is often difficult to diagnose as symptoms can appear unrelated and the person does not always associate their symptoms with the food they are eating.