Read more about the article Subarachnoid Haemorrhage – SAH
Subarachnoid haemorrhage on seen on CT scan. Hyperdense material is seen filling the subarachnoid space - most commonly - as in this example - around the circle of Willis. This is the white-ish area in the centre of the image in a star-like shape.

Subarachnoid Haemorrhage – SAH

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Introduction A subarachnoid haemorrhage (SAH) describes bleeding in the brain into the subarachnoid space. A subarachnoid haemorrhage is considered a type of hemorrhagic stroke.  The bleeding occurs as the result…

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Subdural Haematoma

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Introduction A subdural haematoma is a collection of blood between the arachnoid and dura mater. It can be acute, chronic, or acute on chronic. Most cases are chronic, and occur…

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Summary of Headaches

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  Headache Characteristics Duration Fequency Mechanism Treatment Tension   Tight band feeling, stress, low mood  -Diffuse, ache,dull - Worse on touching scalp, agg by noise -Associated with tension - Depression…

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Tension Headache

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Introduction Tension headaches are thought to account for about 40% of all headaches. They are also sometimes referred to as muscle contraction headaches. They typically last for several hours, and often recur…

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Todd’s Paresis

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Overview Todd's paresis, (aka postictal paresis or postictal paralysis) is a temporary neurological disorder that presents with a focal neurological deficit after a seizure - for example - limb weakness.…

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Introduction Vertigo is the hallucination of rotation due to the abnormal stimulation of the hair cells of the vestibular system. Vestibular System The vestibular system is composed of 1)      3…

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