those **** is for r-a-p-i-d I have no idea what's wrong with that word

Those symptoms you ask for (photosensitivity, vomiting, headache) are not associated with lymphoma by the way. Most of us have viruses and bacterias that cause meningitis in our body, and I believe medicine still has no answer why some people ocassionaly get it. It may be from some specific reason (some other underlying illness) but very often happens without any "visible" reason. I have a friend that had bacterial meningitis, fought with it for a long time, but before was completely healthy, and is now also completely healthy after it.