Transient<unk>  may arise in acute illness of any kind, as a consequence of certain cancer treatments or other drugs which affect digestive action, or due to abnormal eating patterns. The symptoms are almost identical to those of low stomach acid, therefore most doctors will usually recommend trying out supplemental hydrochloric acid before moving on to the invasive procedures required to confirm a damaged nerve. Patients with cancer may develop<unk>  because of chemotherapy-induced neuropathy, immunosuppression followed by viral infections involving the GI tract, procedures such as celiac blocks, paraneoplastic neuropathy or myopathy, or after an allogeneic bone marrow transplant via graft-versus-host disease.<unk>  present similar symptoms to slow gastric emptying caused by certain opioid medications, antidepressants, and allergy medications, along with high blood pressure. For patients already with<unk> , these can make the condition worse. More than 50% of all<unk>  cases are idiopathic in nature, with unknown causes. It is, however, frequently caused by autonomic neuropathy. This may occur in people with type 1 or type 2 diabetes, about 30-50% among long-standing diabetics. In fact, diabetes mellitus has been named as the most common cause of<unk> , as high levels of blood glucose may effect chemical changes in the nerves. The vagus nerve becomes damaged by years of high blood glucose or insufficient transport of glucose into cells resulting in<unk> . Adrenal and thyroid gland problems could also be a cause.<unk>  has also been associated with connective tissue diseases such as scleroderma and Ehlers–Danlos syndrome, and neurological conditions such as Parkinson's disease and multiple system atrophy. It may occur as part of a mitochondrial disease. Opioids and anticholinergic medications can cause medication-induced<unk> . Chronic<unk>  can be caused by other types of damage to the vagus nerve, such as abdominal surgery. Heavy cigarette smoking is also a plausible cause since smoking causes damage to the stomach lining. Idiopathic<unk> <unk>  with no known cause) accounts for a third of all chronic cases; it is thought that many of these cases are due to an autoimmune response triggered by an acute viral infection. Gastroenteritis, mononucleosis, and other ailments have been anecdotally linked to the onset of the condition, but no systematic study has proven a link.<unk>  sufferers are disproportionately female. One possible explanation for this finding is that women have an inherently slower stomach emptying time than men. A hormonal link has been suggested, as<unk>  symptoms tend to worsen the week before menstruation when progesterone levels are highest. Neither theory has been proven definitively.
Gastroparesis
Dysphagia
Paresis
Nosophobia
Facial weakness
Paresthesia
Dysuria
Myotonia