What Causes Exercise Intolerance?

Post-Concussion Syndrome

Post-concussion syndrome refers to a group of symptoms that might continue for a period following a concussion. Concussions are the mildest form of traumatic brain injury. Post-concussion syndrome is said to occur in around fifteen percent of individuals who have had a single concussion. In some cases, the symptoms last for only a few weeks, but in others, they may last for more than one year. A diagnosis is made when an individual's symptoms last for longer than three months following the injury. An individual doesn't need to lose consciousness to receive a diagnosis. Post-concussion syndrome itself doesn't have a treatment, but there are treatments for individual symptoms. Most cases of this condition, thankfully, eventually resolve. Symptoms are mostly physical, although some psychological symptoms may persist for longer periods. Common physical symptoms include a headache, while difficulty concentrating is a common cognitive symptom, and irritability presents as a behavioral symptom. Other disorders might increase a great deal of the symptoms.

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Cardiac Arrhythmia

Cardiac arrhythmia is the medical term for heart rhythm problems. These occur when the body's electrical impulses fail to properly coordinate the heartbeats, which makes the heart beat irregularly, too slow, or too fast. Heart arrhythmias might feel like your heart is racing or fluttering. They have the potential to be harmless, but some can cause symptoms and signs that might be either bothersome or potentially life-threatening. Treatment for the condition is often able to eliminate or control irregular heartbeats. Some arrhythmias don't have any symptoms at all. When there are symptoms, they tend to be a feeling of fluttering in the chest, a slow heartbeat, a racing heartbeat, or chest pain. The condition can cause exercise intolerance when it presents with shortness of breath, dizziness, lightheadedness, and fainting or near-fainting episodes.

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