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For 50% of people, post-concussion symptoms go away within a few days to several weeks after the original injury occurs. [59] In others, symptoms may remain for three to six months, [ 25 ] but evidence indicates that many cases are completely resolved within six months. [ 18 ]
But the recovery time can vary. Up to about 1/3 of people experience persisting symptoms after concussion (PHAC) or persistent post concussion symptoms (PPAC), defined as symptoms that last more than 4 weeks. [5] [6] [7] After an injury, concussion symptoms can begin immediately or be and delayed by 1-2 days at most. [8]
A bruise, also known as a contusion, is a type of hematoma of tissue, [3] the most common cause being capillaries damaged by trauma, causing localized bleeding that extravasates into the surrounding interstitial tissues. Most bruises occur close enough to the epidermis such that the bleeding causes a visible discoloration.
A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. [8] Symptoms may include headache, dizziness, difficulty with thinking and concentration, sleep disturbances, mood changes, a brief period of memory loss, brief loss of consciousness; problems with balance; nausea; blurred vision; and mood changes.
Cerebral contusion (Latin: contusio cerebri), a form of traumatic brain injury, is a bruise of the brain tissue. [2] Like bruises in other tissues, cerebral contusion can be associated with multiple microhemorrhages, small blood vessel leaks into brain tissue. Contusion occurs in 20–30% of severe head injuries. [3]
"Faster" is a song by English rock musician George Harrison from his self-titled 1979 studio album. The song was inspired by Harrison's year away from music-making in 1977, during which he travelled with the Formula 1 World Championship , and by his friendship with racing drivers such as Jackie Stewart , Emerson Fittipaldi , and Niki Lauda .
Flail chest is usually associated with significant pulmonary contusion, [15] and the contusion, rather than the chest wall injury, is often the main cause of respiratory failure in people with these injuries. [69] Other indications of thoracic trauma may be associated, including fracture of the sternum and bruising of the chest wall. [63]
On-field predictors of injury severity can define return-to-play guidelines and urgency of care, but past criteria have either lacked sufficient incidence for effective utility, [10] [11] did not directly address the severity of the injury, [12] or have become cumbersome and fraught with inter-rater reliability issues.