Basal ganglia stroke

 Basal ganglia stroke

basal ganglia  is generally a ganglion which  is a collection of cell bodies outside the central nervous system.It is a collection of nuclei deep to the white matter of cerebral cortex. It includes:

1) caudate,

 2)putamen,

 3)nucleus accumbens,

  4)globus pallidus,

  5)substantia nigra,

  6)subthalamic nucleus,

This region has a supply of blood that  can easily damage or blocked. When the supply of blood to any of   region in the  brain is disturbed, the individual will undergo a stroke. When a stroke occurs because of lack of blood flow in the basal ganglia it is referred as basal ganglia stroke . Strokes that damage the basal ganglia can cause a range of abnormalities in body movement.The basal ganglia mainly control coordination of movement, and when these nerve centers become damaged, the body loses its ability to coordinate. This disorder is called ataxia. If the basal ganglia become damaged by a stroke, then the muscles of face, mouth, and throat  also weaken and function incorrectly.

signs and symptoms of basal ganglia stroke

When a stroke occurs because of lack of blood flow in the basal ganglia, it leads to symptoms. The typical symptoms for a stroke in this area include:

1) Changes in body movement – when stroke occurs in the basal ganglia , a variety of anomalies in movement of the body occur.it include–

Stiff  and Rigid muscles

Loss of movement

Tremors

Ataxia(loss of ability to coordinate)

Difficulty in swallowing

Difficulty in smiling or speaking

2) Cognitive impairment- Patients having  stroke affecting the basal ganglia will experience a decrease in cognitive functionSome of the functions affected by a stroke in the basal ganglia include

difficulty in making decisions

memory disturbances,

language problem,

difficulty in attention.

These symptoms improve over time, but rarely return to normal levels

3) Unconsciousness, nausea, vomiting and headache- A hemorrhagic stroke in the basal ganglia will result in headache, nausea and vomiting.  when bleeding  occurs in the caudate nucleus  it can spread to other areas of the brain. As a result  the  blood irritates the nerves and tissues of the brain and can lead to pain and vomiting. Furthermore, the increased pressure caused by the excess blood can lead to parts of the brain shutting down. Once the brain begins to shut down, the patient can lose consciousness and  enters into the state of   coma.

4) Personality changes- A basal ganglia stroke can lead to personality changes,  like

  • Difficulty in  understanding
  • Frustration
  • Anxious
  • Lack of motivation
  • Loss of interest in any activities
  • Crying for no reason
  • Laugh for no reason
  • Depression
  • Anger

Article publié pour la première fois le 11/10/2011

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