A small amount of pressure in the wrong part of the brain can have widespread effects.
The initial effect of head injuries are often severe and life-threatening but once the danger is over, the ongoing symptoms can often be subtle, including prolonged confusion, depression, personality changes, aggression, agitation, poor attention span, anxiety, poor memory, difficulty sleeping, temperature fluctuations, or simply a feeling of being not quite right. These symptoms often have their origin in restriction patterns caused by the accident and can be helped greatly by craniosacral treatment.
Head injuries leave patterns of restriction in the membranes in the head. If these restriction patterns are causing pressure on the wrong part of the brain the effects can be intense. The amount of pressure can be tiny, only a few microns but they can make a big difference. Just to put that in context a sheet of paper is 100 microns thick.
So a small amount of pressure in the wrong part of the brain can have widespread effects.