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There are specific diagnostic tests for certain food intolerances. Signs and symptoms. Food intolerance is more chronic, less acute, less obvious in its presentation, and often more difficult to diagnose than a food allergy. Symptoms of food intolerance vary greatly, and can be mistaken for the symptoms of a food allergy.
Multiple chemical sensitivity ( MCS ), also known as idiopathic environmental intolerances ( IEI ), is an unrecognized and controversial diagnosis characterized by chronic symptoms attributed to exposure to low levels of commonly used chemicals. [1] [2] Symptoms are typically vague and non-specific. They may include fatigue, headaches, nausea ...
Skin testing on the arm is a common way for detecting an allergy, but it is not as effective as other tests. Patch test Diagnosis is usually based on a medical history , elimination diet , skin prick test , blood tests for food-specific IgE antibodies , or oral food challenge .
Hypersensitivity (also called hypersensitivity reaction or intolerance) is an abnormal physiological condition in which there is an undesirable and adverse immune response to antigen. It is an abnormality in the immune system that causes immune diseases including allergies and autoimmunity.
Many patients go undiagnosed or misdiagnosed and either untreated or treated for other disorders. Current tests for OI ( tilt table test, NASA Lean Test, [12] adapted Autonomic Profile (aAP), [13] autonomic assessment, and vascular integrity) can also specify and simplify treatment. [9]
Drug intolerance or drug sensitivity refers to an inability to tolerate the adverse effects of a medication, generally at therapeutic or subtherapeutic doses. Conversely, a patient is said to be "tolerating" a drug when they can tolerate its adverse effects.
An elimination diet, also known as exclusion diet, is a diagnostic procedure used to identify foods that an individual cannot consume without adverse effects. [1] Adverse effects may be due to food allergy, food intolerance, other physiological mechanisms (such as metabolic or toxins), [2] or a combination of these.
Specialty. Endocrinology. Fructose malabsorption, formerly named dietary fructose intolerance ( DFI ), is a digestive disorder [1] in which absorption of fructose is impaired by deficient fructose carriers in the small intestine's enterocytes. This results in an increased concentration of fructose.
Gluten-sensitive enteropathy–associated conditions. Gluten-sensitive enteropathy–associated conditions are comorbidities or complications of gluten-related gastrointestinal distress (that is, gluten-sensitive enteropathy or GSE). GSE has key symptoms typically restricted to the bowel and associated tissues; however, there are a wide variety ...
To assist in diagnosis, a doctor may order an HbA1c test, which measures the blood sugar average over the two or three months before the test. The more specific 6-hour glucose tolerance test can be used to chart changes in the patient's blood sugar levels before ingestion of a special glucose drink and at regular intervals during the six hours ...