I get teary eyed during winters when i go outside, biking or walking. when i study for long hours this happens during the summers too. i am from india?

See your eye Doctor: Antihistamines can dry your eyes and mucous membranes out, although helpful with seasonal allergies. Also, if you do a lot of computer work, or you're staring at the screen more than blinking, you will have dry eyes. So please see your I doctor to be worked up for dry eyes syndrome, and see whether or not you need to use more lubricating drops and ointment. You may also need to have your thyroid checked too.