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Thalamic haemorrhage

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Thalamic haemorrhage is usually caused by hypertension. It is associated with contralateral hemisensory loss, ataxia and minor motor weakness.

Oculomotor abnormalities include loss of vertical gaze, especially upwards; deviation downwards and inwards of the eyes at rest; hyperadduction with poor abduction in one or both eyes; and conjugate eye deviation to the side opposite the lesion or ipsilateral lesion.

Behavioural abnormalities are common. They include diminished alertness, apathy, amnesia and a reduced ability to remember new events. There may be aphasia from non-dominant hemispheric lesions. Visual neglect is rare.

Oculomotor and behavioural abnormalities are characteristic of medial thalamic involvement; sensory and ataxic abnormalities suggest ventrolateral thalamic structures. Extension into the subthalamic nucleus is suggested by hemiballismus.


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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