Hello,
Headache can be caused due to number of reasons. Headache associated with vision problem is usually associated with working on screens or working under dim light. Headache associated with underlying stress is usually of mild to moderate intensity and not increased by any physical activity. If there is associated running nose, lacrimation, nausea, vomiting, intolerance to voice and light it can be cluster or migraine type. There are good medications available to take care of all types of headache.
Next Steps
Consult nearby psychiatric clinic or you can consult me.