A Tiny Tuesday FUBAR
Technophobe was right in with the (now) obvious diagnosis in her comment yesterday.
Not a bacteria infection from a bite (although there have been bites a-plenty). Not an allergic reaction (hence the antihistamine failing to impact it). Viral... shingles. Bugrit!
Still, if you have to avoid strong sunshine, alcohol and shared swimming pools, and have no energy for lonely canal side walks, the south of France won't the worst place to be for another two weeks...
It'll just feel like it.