A Brooklyn woman not only suffered horrific skin damage in a city-run hospital’s blunder, but has to suffer the insult of a paltry remedy, her lawyer said yesterday.

Marie Louis-Jeune, 55, who suffers from diabetes, charged that Coney Island Hospital’s emergency-room personnel hooked her up to intravenous solutions — but missed her veins, leaving calcium chloride solution to destroy skin around both her elbows.

“It [the solution] ate away her skin as if it were a piranha,” said Jeune’s lawyer, Richard Mogg of Frekhtman & Associates.

Mogg wouldn’t divulge how much the city offered in a conference at Brooklyn Supreme Court, but said that his client suffered damages “in the millions” of dollars.