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  2. Dysphagia - Wikipedia

    en.wikipedia.org/wiki/Dysphagia

    Dysphagia may manifest as the result of autonomic nervous system pathologies including stroke [23] and ALS, [24] or due to rapid iatrogenic correction of an electrolyte imbalance. [ 25 ] In older adults, presbyphagia - the normal healthy changes in swallowing associated with age - should be considered as an alternative explanation for symptoms.

  3. Evolutionary models of human drug use - Wikipedia

    en.wikipedia.org/wiki/Evolutionary_models_of...

    Researchers [39] suggest that because variation in drug use susceptibility is in part due to genetic factors, drug consumption could potentially be a costly and honest signal of biological quality. [ 40 ] [ 41 ] The hypothesis being that humans engage in substance use despite health costs in part to evidence that they can afford to do so.

  4. Indigestion - Wikipedia

    en.wikipedia.org/wiki/Indigestion

    Prokinetics (medications focused on increasing gut motility), such as metoclopramide or erythromycin, has a history of use as a secondary treatment for dyspepsia. [6] While multiple studies show that it is more effective than placebo, there are multiple concerns about the side effects surrounding the long-term use of these medications.

  5. Substance dependence - Wikipedia

    en.wikipedia.org/wiki/Substance_dependence

    Substance dependence, also known as drug dependence, is a biopsychological situation whereby an individual's functionality is dependent on the necessitated re-consumption of a psychoactive substance because of an adaptive state that has developed within the individual from psychoactive substance consumption that results in the experience of withdrawal and that necessitates the re-consumption ...

  6. Addiction - Wikipedia

    en.wikipedia.org/wiki/Addiction

    addictive drug – psychoactive substances that with repeated use are associated with significantly higher rates of substance use disorders, due in large part to the drug's effect on brain reward systems; dependence – an adaptive state associated with a withdrawal syndrome upon cessation of repeated exposure to a stimulus (e.g., drug intake)

  7. Substance use disorder - Wikipedia

    en.wikipedia.org/wiki/Substance_use_disorder

    Substance use disorder (SUD) is the persistent use of drugs despite substantial harm and adverse consequences to self and others. [8] Related terms include substance use problems [9] and problematic drug or alcohol use. [10] [11] Substance use disorders vary with regard to the average age of onset. [12]

  8. Esophageal motility disorder - Wikipedia

    en.wikipedia.org/wiki/Esophageal_motility_disorder

    Diffuse esophageal spasm (DES) is a motility disorder characterized by recurrent episodes of chest pain or dysphagia as well as nonpropulsive (tertiary) contractions on radiographs. [ 5 ] Nutcracker esophagus is characterized by high-amplitude peristaltic contractions that are frequently prolonged and cause dysphagia and chest pain.

  9. Esophageal food bolus obstruction - Wikipedia

    en.wikipedia.org/wiki/Esophageal_food_bolus...

    An esophageal food bolus obstruction is a medical emergency caused by the obstruction of the esophagus by an ingested foreign body.. It is usually associated with diseases that may narrow the lumen of the esophagus, such as eosinophilic esophagitis, Schatzki rings, peptic strictures, webs, or cancers of the esophagus; rarely it can be seen in disorders of the movement of the esophagus, such as ...