Do you know a virus called ATCV-1?
Maybe, you do not know it.
However, you should know it.
This may be a cause worsening your head.
44% of people seem to have been already infected by ATCV-1.
This virus was discovered by the study team of Nebraska University and the John Hopkins medical college.
The concentration and ability for space perception seem to decrease when infected with this virus.
The person who doubt these abilities may be infected.