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What are the symptoms of a stroke?

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The functions of the different parts of the body are controlled by different parts of the brain. So, the symptoms vary depending on which part of the brain is affected, and on the size of the damaged area. Symptoms develop suddenly, and usually include one or more of the following.

Weakness of an arm, leg, or both. This may range from total paralysis of one side of the body, to mild clumsiness of one hand.
Weakness and 'twisting' of one side of the face. This may cause you to drool saliva.
Problems with balance, co-ordination, vision, speech, communication, or swallowing.
Dizziness or unsteadiness.
Numbness in a part of the body.
Headache.
Confusion.
Loss of consciousness (occurs in severe cases).

What is a mini-stroke (a TIA)?

A mini-stroke is a set of symptoms similar to a stroke, but which last less than 24 hours. It is due to a temporary lack of blood to a part of the brain. It is more correctly called a 'transient ischaemic attack' (TIA). In most cases, a TIA is caused by a tiny blood clot that becomes stuck in a small blood vessel (artery) in the brain. This blocks the blood flow, and a part of the brain is starved of oxygen. The affected part of the brain is without oxygen for just a few minutes, and soon recovers. This is because the blood clot either breaks up quickly, or nearby blood vessels are able to compensate.

Unlike a stroke, the symptoms of a TIA soon go. However, you should see a doctor urgently if you have a TIA as you are at increased risk of having a 'full' stroke.