Symptoms of stroke

Symptoms of stroke
Symptoms of the stroke typically start suddenly, over seconds to minutes,. The symptoms  depend on the area of the brain affected. The more the area of brain affected, the more  functions that are likely to be lost. Some forms of stroke can cause additional symptoms. For  example, in intracranial hemorrhage, the affected area may compress other structures. Most  forms of stroke are not associated with headache, apart from subarachnoid hemorrhage and  cerebral venous thrombosis and occasionally intracerebral hemorrhage  . If the area of the brain affected contains one of the  these central nervous system pathways— spinothalamic tract  corticospinal tract, and dorsal column (medial lemniscus,  symptoms may include:  1) there will be hemeplegia and weakness of the muscles of face  2) there is feeling of numbness  3) there is decreased in sensation.  4) Firstly there is flaccidity (hypotonicity), replaced by spasticity (hypertonicity), followed by  In most cases, the symptoms affect only one side of  the body i.e. .unilateral . Depending on the part of the brain affected, the defect in the brain  is usually on the opposite side of the body.  Brain stem give rise to 12 cranial nerves, stroke affecting the brain stem and  brain therefore can produce symptoms relating to defect in these cranial nerves:  There is total or partial loss of smell, taste, hearing, or vision.  Ptosis is common i.e.drooping of eyelid and weakness of ocular muscles  There is decreased reflexes: swallow, pupil reactivity to light  decreased sensation and muscle weakness of the face  nystagmus and balance problem is common  altered breathing and heart rate  patient is notable to turn head to one side because of weakness in  sternocleidomastoid muscle  due to weakness in tongue muscles there is difficulty in protruding or move side  If the cerebral cortex is involved following  symptoms can be seen  aphasia (difficulty with verbal expression, auditory comprehension, reading and/or  writing Broca's or Wernicke's area is commonly involved)  dysarthria (difficulty in speech)  apraxia (altered voluntary movements)  visual disturbances  memory deficits due to the involvement of temporal lobe  hemineglect due to the involvement of parietal lobe  disorganized thinking, confusion, hypersexual gestures because there is involvement  anosognosia (persistent denial of the existence of a, usually stroke-related, deficit)  If the cerebellum is involved, the patient may have the following:  difficulty in walking  altered movement coordination  vertigo and or disequilibrium   Associated symptoms  There is loss of consciousness, headache, and vomiting usually occurs more often in  hemorrhagic stroke than in thrombosis because of the increased intracranial pressure from  the leaking blood compressing the brain.

Article publié pour la première fois le 01/10/2011

Related Posts: