My 9 month old so has not hurt his head, is not sick, is developing well and not taking medication but keeps rolling his eys back and winking. what causes this? should i be worried?

Need visit: May be nothing serious, but would be able to diagnose much better if you have baby seen by doctor/health care provider who can give further advice. This can be done with an in-person or telemedicine visit, which is what I would advise.

Eyes rolling: This could be a neurologic (nervous system) and/or ophthalmologic (vision) condition. It is best to capture the episodes with a video and consult your pediatrician as soon as possible.