Enlarged (Dilated) Pupils And Red Eye (Single)

Reviewed on 9/29/2022

Enlargement of the pupils can be related to eye injury, brain trauma, brain tumor, or drug or medication use. Enlargement of the pupils of the eye can also be related to a stroke. A single red I can be related to an infection or injury. Seek immediate medical attention if you have the sudden onset of enlarged pupils or other symptoms of a stroke or brain damage. Discuss any concerning symptoms with your doctor.

While the list below can be considered as a guide to educate yourself about these conditions, this is not a substitute for a diagnosis from a health care provider. There are many other medical conditions that also can be associated with your symptoms and signs. Here are a number of those from MedicineNet:

At MedicineNet, we believe it is important to take charge of your health through measures such as a living healthy lifestyle, practicing preventative medicine, following a nutrition plan, and getting regular exercise. Understanding your symptoms and signs and educating yourself about health conditions are also a part of living your healthiest life. The links above will provide you with more detailed information on these medical conditions to help you inform yourself about the causes and available treatments for these conditions.

Symptoms & Signs A-Z List