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A study of 20 volunteers conducted at Nagoya University in Japan associated a higher degree of exercise-induced nausea after eating. [1] Lack of hydration during exercise is a well known cause of headache and nausea. [2] Exercising at a heavy rate causes blood flow to be taken away from the stomach, causing nausea. [3]
Typically, it begins 12–48 hours after the activity that triggers it, and lasts for days, but this is highly variable and may persist much longer. [ 4 ] [ 5 ] [ 6 ] Management of PEM is symptom-based, and patients are recommended to pace their activities to avoid triggering PEM.
Exercise in this context means physical activity, not specifically exercise in a fitness program.For example, a person with exercise intolerance after a heart attack may not be able to sustain the amount of physical activity needed to walk through a grocery store or to cook a meal.
[2] [5] Occasionally, tiredness can last for hours to days after an episode of motion sickness, known as "sopite syndrome". [2] Rarely severe symptoms such as the inability to walk, ongoing vomiting, or social isolation may occur while rare complications may include dehydration , electrolyte problems , or a lower esophageal tear from severe ...
The hallmark symptom is post-exertional malaise, a worsening of the illness which can start immediately or hours to days after even minor physical or mental activity. This "crash" can last from hours or days to several months. Further common symptoms include dizziness or faintness when upright and pain. [3] [10] The cause of the disease is ...
Orthostatic intolerance (OI) is the development of symptoms when standing upright that are relieved when reclining. [1] There are many types of orthostatic intolerance. OI can be a subcategory of dysautonomia, a disorder of the autonomic nervous system [2] occurring when an individual stands up. [3]
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3–6 days few hours to 4 days Mean Inter-episodic duration 1–3 months 1 week to 1 month Presence of Prodrome phase common common Recovery time lasting several days lasting hours to days Vomiting universal up to 6 times an hour universal up to 6 times an hour Abdominal pain common (57–70%) common (68–80%) Upper Gastrointestinal Complications