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Multiple chemical sensitivity (MCS) is an underrecognized 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, respiratory problems, seizures, confusion, lethargy, pain, and dizziness.
A food intolerance differs from a food allergy or chemical sensitivity because it generally requires a normal serving size to produce symptoms similar to an IgE immunologic response. While food intolerances may be mistaken for a food allergy, they are thought to originate in the gastrointestinal system.
There is a wide variety of symptoms, with no pattern associating particular exposures with particular symptoms. [1] Symptoms do not appear consistently after exposure in blinded experiments. [1] However, the expectancy-induced nocebo effect seems to produce symptoms when they believe they have been exposed, even if they have not been exposed to ...
Detoxification and body cleansing products and diets have been criticized for their unsound scientific basis, in particular their premise of nonexistent "toxins" and their appropriation of the legitimate medical concept of detoxification. According to the Mayo Clinic, the "toxins" typically remain unspecified and there is little to no evidence ...
In contrast, alcohol allergy involves the immune system mistakenly identifying alcohol or its components, such as sulfites (preservatives commonly used in alcoholic beverages to prevent spoilage) and histamines (chemical compounds naturally produced during fermentation that can trigger inflammatory responses), as harmful, thereby triggering an ...
Caffeine dependence can cause a host of physiological effects if caffeine consumption is not maintained. Commonly known caffeine withdrawal symptoms include headaches, fatigue, loss of focus, lack of motivation, mood swings, nausea, insomnia, dizziness, cardiac issues, hypertension, anxiety, and backache and joint pain; these can range in severity from mild to severe. [18]
Chemical sensitivity may refer to: Multiple chemical sensitivity, a chronic increase in sensitivity to common chemicals; Food intolerance, a negative reaction to chemical components in the diet; Drug intolerance or drug sensitivity, a lower threshold to the normal pharmacologic action of a drug, not to be confused with drug allergy
Chemesthesis is the detection of potentially harmful chemicals by the skin and mucous membranes. [1] Chemesthetic sensations arise when chemical compounds activate receptors associated with other senses that mediate pain, touch, and thermal perception.