A US doctor has stated a range of traumatic brain injuries can affect soldiers wounded in battle.
Zachary Osbourn told the Missourian that ailments which affect servicemen and women can differ depending on their stationing and the equipment they were using.
The neuropsychologist at Truman Veterans Hospital remarked: "Each concussion - or blast injury - will vary based on what they were doing, what kind of blast occurred, what kind of protection and where they were in relation to it."
Mr Osbourn was commenting in relation to the story of corporal John McClennan, a 23-year-old whose chances of survival following a battlefield accident were put at one per cent, according to the news provider.
Three years on, he has defied medical predictions that he may be unable to speak and is set to study at Florida State College.
One organisation that aims to support soldiers affected by traumatic brain injury is Rand, the Centre for Military Health Policy Research.
It holds discussions groups for both those who have been diagnosed with a head trauma and their relatives.
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