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Dysgeusia, also known as parageusia, is a distortion of the sense of taste. Dysgeusia is also often associated with ageusia, which is the complete lack of taste, and hypogeusia, which is a decrease in taste sensitivity. [1] An alteration in taste or smell may be a secondary process in various disease states, or it may be the primary symptom.
Muscle disorders, such as scleroderma or lupus, which affect the muscles involved in swallowing. “Stress, anxiety or depression can sometimes lead to difficulty swallowing,” Dr. Nocerino says.
Ageusia (from negative prefix a-and Ancient Greek γεῦσις geûsis 'taste') is the loss of taste functions of the tongue, particularly the inability to detect sweetness, sourness, bitterness, saltiness, and umami (meaning 'savory taste'). It is sometimes confused with anosmia – a loss of the sense of smell.
[1] [2] Common symptoms include coughing, fever, loss of smell (anosmia) and taste (ageusia), with less common ones including headaches, nasal congestion and runny nose, muscle pain, sore throat, diarrhea, eye irritation, [3] and toes swelling or turning purple, [4] and in moderate to severe cases, breathing difficulties. [5]
Taste is the perception stimulated when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue. Taste, along with the sense of smell and trigeminal nerve stimulation (registering texture, pain, and temperature), determines flavors of food and other substances.
As the disorder progresses, behavior is modified in order to satisfy the urge for the food. These behavioral changes can result in binge eating disorder , obesity , and bulimia nervosa . A study in Physiology & Behavior by Parylak et al. suggests that animal models given free access to food become more emotionally withdrawn once the food is ...