Anyone develop skin problems after the hard freeze?

My wife developed an allergic reaction about a month after the freeze. After testing (including a skin biopsy), eliminating every chemical possible, getting on like 6 drugs, we seem to have isolated the issue to be our water. We installed a water purification system and her symptoms are finally going away.

Anyone else have a similar story? I'm trying to figure out if this is potentially a more widespread issue, or if it was maybe just a freak occurrence.