Enlarged or dilated pupils can be seen in the presence of low light conditions. Abnormally dilated pupils that do not respond to light can also be a side effect of certain drugs and medications. Jerking eye movements typically arise due to problems in the inner ear or within the brain itself. Dilated pupils that do not respond to light or unevenly dilated pupils can be a sign of stroke or head injury. Seek immediate medical attention for the sudden onset of dilated pupils that do not respond to light. Always report worrisome symptoms to a 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:
Cocaine and Crack Abuse
Cocaine is an addictive stimulant that is smoked, snorted, and injected. Crack is cocaine that comes in a rock crystal that is heated to form vapors, which are then smoked. Cocaine has various effects on the body, including dilating pupils, constricting blood vessels, increasing body temperature, heart rate, and blood pressure.
Drug interactions occur frequently. Get facts about the types of drug interactions, what substances or other things that may interact with drugs such as OTC drug and prescription drugs, vitamins, food(s) (grapefruit), and laboratory tests. Find out how to protect yourself from potential drug interactions.
Alcohol Abuse and Alcoholism
Alcoholism is a disease that includes alcohol craving and continued drinking despite repeated alcohol-related problems, such as losing a job or getting into trouble with the law. It can cause myriad health problems, including cirrhosis of the liver, birth defects, heart disease, stroke, psychological problems, and dementia. Counseling and a few medications can be effective for alcoholism treatment.
Labyrinthitis (Inner Ear Inflammation)
Labyrinthitis occurs when there is inflammation of the part of the ear responsible for balance and hearing), usually due to viral infections of the inner ear. Learn about causes, symptoms, and treatment.
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.