Hemocythemia
Hemocythemia (or a hemocythemic imbalance) was a medical condition where the osmotic pressure on the  walls are unstable. Osmotic pressure therapy was the standard means of treatment.

After  was duplicated by a subspace divergence field in 2372, Naomi Wildman was born with hemocythemia caused by her fetal transport procedure. Despite The Doctor's best efforts, the child eventually succumbed to the condition due to equipment failure, resulting from damage caused by proton bursts from the other Voyager. On the other Voyager, The Doctor successfully corrected the condition. ()

Medical conditions