Asia
From a selected group of studies found from a literature search, researchers discovered many demographic factors of Asian populations that showed significant association with PPD. Some of these include age of mother at the time of childbirth as well as older age at marriage. Being a migrant and giving birth to a child overseas has also been identified as a risk factor for PPD. Specifically for Japanese women who were born and raised in Japan but who gave birth to their child in Hawaii, USA, about 50% of them experienced emotional dysfunction during their pregnancy. In fact, all women who gave birth for the first time who were included in the study experienced PPD. In immigrant Asian Indian women, the researchers found a minor depressive symptomatology rate of 28% and an additional major depressive symptomatology rate of 24% likely due to different health care attitudes in different cultures and distance form family leading to homesickness.In the context of Asian countries, premarital pregnancy is an important risk factor for PPD. This is because it is considered highly unacceptable in most Asian culture as there is a highly conservative attitude toward sex among Asian people than people in the west. In addition, conflicts between mother and daughter-in-law are notoriously common in Asian societies as traditionally for them, marriage means the daughter-in-law joining and adjusting to the grooms family completely. These conflicts may be responsible for emergence of PPD.
The tumour in thymoma associated disease is typically epithelial in nature. Facioscapulohumeral muscular dystrophy – even though there is not a clear correlation between the facioscapulohumeral muscular dystrophy and the pharyngeal and upper aesophageal striated muscle. Minor, and nonspecific, primary aesophageal dysmotility was present as seen in the 2008 study by Joerg-patrick Stübgen. Multiple sclerosis – may lead to aesophageal dysmotility Chemotherapy – radiation from cancer therapy may cause a stricture of the throat leading to the inability to swallow. Stroke – swallowing problems can cause stroke victims to aspirate food or liquid into the lungs and cause pneumonia mostly in elderly people. Parkinsons disease – the mechanism of swallowing disorders in Parkinsons disease may be related to extrapyramidal and autonomic system disorders. The cardinal symptoms of Parkinsons disease: tremor, bradykinesia, and rigidity are initially responsible for swallowing, which is mainly observed in the advanced stages of the disease
Damage to the lateral hypothalamus can also lead to aphagia, as seen in the 1978 study by Timothy Schallert and Ian Whishaw. Other causes might be due to depression, cervical spine disease and conversion disorders.It is important to note that all these causes (except due to the damage of the lateral hypothalamus) are indirect. Diagnosis
Modified barium swallow – videofluoroscopic swallow (fluoroscopy). A lateral video X-ray that provides objective information on bolus transport, safest consistency of bolus, and possible head positioning and maneuvers that may facilitate swallow function depending on each individuals anatomy and physiology.