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The diagnosis of histamine intolerance is challenging due to its nonspecific symptoms and lack of validated diagnostic tools. [5] [19] [20] Histamine intolerance is not recognized as an explicit medical condition with that name in the International Classification of Diseases (ICD) Edition 11, [2] or any previous edition of the ICD.
Mast cell activation syndrome (MCAS) is a term referring to one of two types of mast cell activation disorder (MCAD); the other type is idiopathic MCAD. [1] MCAS is an immunological condition in which mast cells, a type of white blood cell, inappropriately and excessively release chemical mediators, such as histamine, resulting in a range of chronic symptoms, sometimes including anaphylaxis or ...
In this situation, proteins in egg white directly trigger the release of histamine from mast cells. [ 40 ] [ 41 ] Because this mechanism is classified as a pharmacological reaction, or " pseudoallergy ", [ 40 ] the condition is considered a food intolerance instead of a true immunoglobulin E (IgE) based allergic reaction.
The reported prevalences of food allergy/intolerance (by questionnaires) were 12% to 19%, whereas the confirmed prevalences varied from 0.8% to 2.4%. For intolerance to food additives the prevalence varied between 0.01 and 0.23%. [61] Food intolerance rates were found to be similar in the population in Norway.
ICD-10 is the 10th revision of the International Classification of Diseases (ICD), a medical classification list by the World Health Organization (WHO). It contains codes for diseases, signs and symptoms, abnormal findings, complaints, social circumstances, and external causes of injury or diseases. [1]
Hypersensitivity (also called hypersensitivity reaction or intolerance) is an abnormal physiological condition in which there is an undesirable and adverse immune response to an antigen. [ 1 ] [ 2 ] It is an abnormality in the immune system that causes immune diseases including allergies and autoimmunity .
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Mastocytosis, a type of mast cell disease, is a rare disorder affecting both children and adults caused by the accumulation of functionally defective mast cells (also called mastocytes) and CD34+ mast cell precursors.