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A member asked:
Right pupil is bigger than the left pupil. irritating pain on the right side of head. what can be causing this?
2 doctors weighed in across 2 answers
Depends: Can be many things. Pupil asymmetry is normal up to 1 mm difference. If the headache does not improve or other symptoms develop, you need to see your doctor fast.
Answered 11/8/2015
4.3k views
Thank
Cluster headache: See your doctor for evaluation and treatment. There could be more serious underlying causes, so seek medical care asap.
Answered 9/28/2016
4.3k views
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