Closely related to meningitis, this inflammation of the brain can result from viral infections or tiny parasites
Viruses are 
actually made up of tiny pieces of DNA or RNA, and are smaller ... . ... Parasites 
can cause disease in humans ... . .... Nausea is also closely related to appetite 
loss ... . [DOC] [TLE] meningitis facts, information, pictures | Encyclopedia.com articles ... [PAR] Meningitis is most commonly caused by infection by bacteria, viruses, ...