Got hit in the head few days ago (Thursday night). Didn't lose consciousness, just the standard seeing stars. No dizziness, no nausea, outside of a minor headache, nothing. Felt fine for the next few todays.

Today I noticed my pupils are dilating. No other symptoms outside of a minor headache.

This isn't my first concussion. I'm also feeling quite fatigued.

What could this be? Once again, feel totally fine outside of the fatigue and dilation (and headache, obviously).

Is this normal?

jd1997,

Welcome to NeuroTalk.

It is very difficult to self-diagnose pupil dilation. I doubt it means anything because you do not have anything to compare it to. I doubt you check your pupil dilation on a regular basis.

Pupil dilation is a concern when one dilates at a different rate than the other. But, self-diagnosis is not reliable.

Following my tbi, my pupils acted strangely for two years. They wouldn't dilate very much. I had beady looking eyes.

This small pupil could be because the visual processing can struggle with too much light so the pupils constrict to reduce the light entering the eye. This is different than the dilation issue that indicates severe brain damage. In that case, the control over the dilation process is disrupted. A difference between how each eye dilates would indicate a severe brain injury.

I have needed to wear photo sensitive lenses since the 70s. I also wear a brimmed hat to reduce brightness from the sun or lights. This is not uncommon.

Older ballast fluorescent lights can be problematic due to the frequency of the flicker. Newer electronic ballast lights are usually less of a problem.