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Head Injuries
SCALP
Scalp wounds bleed copiously, making it a major source of haemorrhage and
shock. They may also be incidental to damage to the skull.
SKULL
Skull fractures in different places have rather different effects, but for these
purposes, symptoms include one or more of the following; a mixture of blood
and cerebrospinal fluid leaking from the ears, nose, or throat, blood in the
whites of the eyes, loss of the sense of smell, loss of vision in one eye, a
dilated, fixed pupil, a worsening in the patients level of consciousness.
These last symptoms are indicative of pressure on the brain, caused either by
swelling of the brain or bleeding into the skull. Swelling of the brain can cause
serious damage or possibly death on its own, but has the advantage that its
self-limiting (and in a modern setting, usually controllable with drugs). On the
other hand, haemorrhage will almost always lead to continued degradation and
death if left untreated.
The patient may have a headache localised at the injury. He may be lucid
for a period after the injury, but this will rarely be a period of normalcy. He will
usually feel drowsy, and may thereafter slip into a coma. The patient will lose
one set of reflexes after another. He may gradually lose the use of one of his
arms or legs, or become completely paralysed on one side of the body. This will
happen gradually as pressure increases starting with a slurring of speech and
clumsiness. His breathing may become uneven, and some part or all of his
body may begin shaking uncontrollably (seizure activity.)
The time course for these degradations can be hours or days and the
condition can worsen dramatically in minutes.
JAW
A broken jaw is associated with numbness, bleeding from tooth sockets,
fractured or missing teeth, inability to close the jaw properly (teeth don't come
together right), pain on moving the jaw, and sometimes with bleeding from the
ear. Fractures of the jaw also allow the tongue and other soft tissues to
intrude into the airway, leading to suffocation.
FACE
All sort of bones can be broken in the face: the face plate, sinuses,
cheekbones, the orbits of the eye, and of course, the nose. There are a wide
variety of possible symptoms, but severe facial injury usually results in
progressive swelling, resulting in difficulty breathing, inhalation of blood,
frequently eventually (~1 hour) completely closing off the airways, resulting in
suffocation. There may also be numbness or paralysis in some part of the face.
Facial injuries can also lead to extreme haemorrhage and shock.
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