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Paroxysmal sympathetic hyperactivity (PSH) is a syndrome that causes episodes of increased activity of the sympathetic nervous system. Hyperactivity of the sympathetic nervous system can manifest as increased heart rate, increased respiration, increased blood pressure, diaphoresis , and hyperthermia . [ 1 ]
Severe symptoms may result in life-threatening complications including seizure, intracranial bleeds (stroke), myocardial infarction, and retinal detachment. [6] Both noxious and non-noxious stimuli can trigger AD. The result is stimulation and hyperactivity of the sympathetic nervous system. [7]
Most reported paroxysmal attacks are painful tonic spasms, dysarthria and ataxia, numbness and hemiparesis. They are typically different from other transient symptoms by their brevity (lasting no more than 2 minutes), frequency (from 1–2 times/day up to a few hundred times/day), stereotyped fashion and excellent response to drugs (usually ...
One of those things it activates is the sympathetic nervous system, resulting in symptoms like chills, sweating, heart palpitations, and blurred vision. Your primary care doctor can check your ...
The behavioral symptoms are similar to those of an amphetamine, cocaine or caffeine overdose. Overstimulation of the central nervous system results in a state of hyperkinetic movement and unpredictable mental status including mania, rage and suicidal behavior; hyperthermia is also prominently present. [11] Delirium can also be present but rarely.
The symptoms of a sympathetic pheochromocytoma are related to sympathetic nervous system hyperactivity. [10] The classic triad includes headaches (likely related to elevated blood pressure, or hypertension), tachycardia/elevated heart rate, and diaphoresis (excessive sweating, particularly at night, also known as hyperhidrosis). [7]
Patients with paroxysmal hypertension who test negative for pheochromocytoma are said to be suffering from a clinical entity called "pseudopheochromocytoma." This disorder is due to episodic dopamine discharge and has been observed predominantly in hypertensive women whose presentation mimicked pheochromocytoma , but with subsequent testing ...
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