Final answer:
A stroke occurs when arteries in the brain are blocked or broken, leading to the death of brain cells and potential impairment of functions. Symptoms of a stroke may include difficulty moving or feeling on one side of the body, speech problems, memory issues, and dizziness.
Step-by-step explanation:
A stroke occurs when blocked or broken arteries in the brain result in the death of brain cells. This may occur when an artery is blocked by a clot or plaque or when an artery ruptures and bleeds in the brain. In both cases, part of the brain is damaged and functions such as speech and controlled movements may be impaired, either temporarily or permanently.
The symptoms of a stroke may include an inability to move, feel, or see on one side of the body, problems understanding speech or difficulty speaking, memory problems, confusion, and dizziness. Hemorrhagic strokes may also cause a severe headache. The symptoms usually occur within seconds or minutes of the brain injury. Depending on the severity of the stroke and how quickly treatment is provided, the symptoms may be temporary or permanent.
If a stroke occurs on the left side of the brain, the right side of the body would be affected. The left side of the brain controls the right side of the body.
A TIA (transient ischemic attack) is a temporary blockage of blood flow to the brain. It is similar to a stroke but the symptoms resolve within 24 hours. TIAs are often a warning sign that a stroke may occur in the future. It is important to seek medical attention if you experience symptoms of a TIA.