The term ‘stroke’ refers to a sudden interruption in blood flow to part of the brain, leading to an alteration in brain function
Because of this interruption, not enough blood reaches the brain, which means that the oxygen and nutrients needed for proper brain function are also prevented from reaching the brain. In short, an initial problem with vascular function ultimately affects the tissue of the brain, which ceases to function correctly, leading to a range of symptoms depending on the affected area.
Effects of a stroke
As a general rule, the following symptoms may manifest themselves following a stroke, depending on the affected area.
- Weakness in the right side of the body
- Loss of sensation in the right side of the body
- Loss of sight in the right visual field
- Trouble with linguistic comprehension and expression
- Trouble with speech
- Substitution of words or syllables
- Mistakes when naming objects
- Trouble reading and writing
Axial cross section of the computed tomography (CT). The arrow shows an ischemic stroke in the left hemisphere (the dotted line indicates the separation between the left and right hemispheres).