Welcome to HCM
The headache which increases on bending forward and which is very uncomfortable to you is most likely due to Chronic sinusitis
. In chronic sinusitis especially frontal sinusitis
, thick secretions accumulate in frontal sinus, which can cause pain on bending forward, heaviness in head, blocking sensation in nose.
Second possibility should not be ignored as it can be a mass or some lesion in frontal region of brain. As you are having rigid movements, shaky movements, complaint of hearing voices (hallucination
?), seeing lights etc. are not so common in sinusitis. There is also complaint of fatiguability.
So as per my opinion please don't ignore the complaints and visit a good doctor take expert opinion. Also get MR Scan to rule out any lesion or mass (although rare).
Hope I cleared your doubt.