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Parkinson’s disease: How often do you blink? The number of times that could be serious

Parkinson’s is caused by a loss of nerve cells in a specific part of the brain.

These nerve cells are used to help send messages between the brain and the nervous system.

Parkinson’s disease symptoms tend to develop gradually, and only appear as mild at first.

One of the key warning signs of the neurodegenerative condition is a change to the number of times you blink, it’s been revealed.

READ MORE: Parkinson’s disease – the hidden sign in the way you talk

“People with Parkinson’s disease may have a variety of complaints related to their vision such as trouble reading, double vision and dry eyes,” said APDA.

“The blink reflex, which occurs normally at about 16 to 18 times per minute, may decrease in Parkinson’s disease, sometimes substantially.

“Less commonly, the flipside may occur, with excessive blinking known as blepharospasm.

“Occasionally, there is apraxia of eyelid opening, which is an inability to open the eyes voluntarily.”

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Common signs of Parkinson’s disease include tremors, slow movement, and muscle stiffness.

The muscle stiffness makes facial expressions more difficult, said the charity.

Tremors usually start in the hand or the arm, and are more likely to occur when the arm is relaxed.

There are about 145,000 people in the UK with Parkinson’s disease, and it’s the fastest growing neurological condition in the world.

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