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    WebMD Symptom Checker

    Enlarged (dilated) pupils and Frequent squinting

    WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms enlarged (dilated) pupils and frequent squinting including Cocaine abuse, Medication reaction or side-effect, and Nearsightedness.

    There are 10 conditions associated with enlarged (dilated) pupils and frequent squinting. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.

    • Cocaine abuse

      Cocaine abuse occurs when a person continues using it despite the social and health problems caused by it.

    • Medication reaction or side-effect

      Medication side effects include nausea, vomiting, stomach upset, weakness, dizziness, seizures, and more.

    • Nearsightedness

      Nearsightedness is a common eye problem that causes blurry, distant vision.

    • Astigmatism

      Astigmatism is a common eye problem causing blurry vision, difficulty seeing details and eye strain headaches.

    • Farsightedness (presbyopia)

      Presbyopia causes an inability to focus on close objects, and headaches or eyestrain when working or reading.

    • Lazy eye

      Lazy eye occurs when the brain favors one eye over the other.

    • Methamphetamine use

      Methamphetamine use causes increased blood pressure, rapid heart rate, enlarged pupils, sweating, and more.

    • Stroke

      A stroke occurs when blood and oxygen to the brain are cut off, and causes numbness, confusion, and more.

    • Adie's pupil

      Adie's pupil is a rare disorder usually affecting only one eye, causing blurry or distorted vision in the eye.

    • Brain tumor

      Primary brain tumors are often benign but can cause seizures, ongoing headaches, or loss of coordination.

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