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What are the causes of excessive blinking in toddlers?

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Reasons why a toddler may exhibit excessive blinking include irritated eyelids from an abrasion; allergies or conjunctivitis; a need for glasses; habitual tics; turning out of an eye; or stress, according to the American Association for Pediatric Ophthalmology and Strabismus. A more rare cause could be a neurological disorder.

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Blinking is an involuntary human reflex and is completely normal, states Knoji. It protects the eyes from elements such as bright light, dust and foreign objects, and it keeps the eyes from drying out. The average child blinks up to 20 times per minute. When a child chronically blinks more than 20 times per minute, this is called excessive blinking. If this occurs over a prolonged period of time, the toddler should be seen by an eye specialist, as it could be the symptom of a health problem or it could cause headaches and stress.

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