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Between 30% and 90% of people treated for PCS report having more frequent headaches and between 8% and 32% still report them a year after the injury. [18] [needs update] Dizziness is another common symptom reported in about half of people diagnosed with PCS and is still present in up to a quarter of them a year after the injury. [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 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.
Loss of consciousness during the second injury is not necessary for SIS to occur. [8] [9] Both injuries may take place in the same game. [10] The athlete may continue playing in the game after the second concussion, and may walk off the field without assistance, but symptoms quickly progress and the condition can rapidly worsen. [11]
Timing is important to wound healing. Critically, the timing of wound re-epithelialization can decide the outcome of the healing. [11] If the epithelization of tissue over a denuded area is slow, a scar will form over many weeks, or months; [12] [13] If the epithelization of a wounded area is fast, the healing will result in regeneration.
More than 30,000 people die of gunshot wounds each year in America, around 75,000 more are injured, and we have no visceral sense of what physically happens inside a person when he’s shot. Goldberg does. Even though Amy Goldberg has been treating gun patients for 30 years, the sense of horror has never completely gone away.
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.
Computed tomography (CT scanning) is a more sensitive test for pulmonary contusion, [6] [33] and it can identify abdominal, chest, or other injuries that accompany the contusion. [38] In one study, chest X-ray detected pulmonary contusions in 16.3% of people with serious blunt trauma, while CT detected them in 31.2% of the same people. [ 45 ]