NeuroTalk Support Groups - Shingles, then concussion at all related?

Hi all,
I know this sounds impossible but I'm wondering if it's at all possible for a 13-year-old to have shingles in April and then a concussion in June? My niece was accidentally knocked down and hit her head on a carpeted basement floor. After all the symptoms of a concussion (including bruise on left temple) she was diagnosed with tbi/concussion. Oddly, she had shingles two months ago. And she was born with glaucoma, which was discovered early and treated by one of the nation's pediatric glaucoma specialist.. She's fine now but has had headaches from time to time (perhaps due to puberty).

Could a viral infection (shingles) trigger a concussion from a mild fall? Could treated glaucoma have anything to do with this? The fall seemed so mild: a larger girl than my niece accidentally knocked over my niece and she hit her head on a carpeted basement floor.

Niece is having third MRI today after a week of sleeping, dizziness, vomiting, etc. Diagnosed and treated concussion, but shingles two months ago? Just wondering.... Thanks!