Photo of Jonathan Pitre and his mother, Tina Boileau, taken in Minnesota. Tina Boileau / -

Doctors in a Minnesota hospital continue to search for answers to a mysterious infection that has left Jonathan Pitre feverish, nauseated and short of breath.

Pitre, 17, of Russell, has been in the University of Minnesota Masonic Childrens Hospital for the past two weeks, suffering from an array of complications more two months after his stem cell transplant. Doctors are also trying to adjust his medications to better deal with his increased pain levels.

Hes having a tough run, said his mother, Tina Boileau, and I really dont know when it will get better.

The teenager suffers from a severe form of epidermolysis bullosa (EB), a painful and progressive skin disease that has left deep, open wounds on his body.

Last week, Pitres face and neck became swollen in response to what doctors believed was some kind of viral infection. That swelling has been brought under control, but a battery of tests has yet to reveal the source of the infection, which continues to cause problems.

Pitres breathing is laboured and hes running a high-grade fever of about 104 F (40 C); he has also developed bleeding and painful sores in his mouth.

We still have no idea what were dealing with, said Boileau. Its frustrating because Im at the point where it would be nice to see that all that Jonathan has gone through has been worth it.

Doctors are monitoring Pitre for graft-versus-host-disease (GVHD), but all of his tests have so far been inconclusive.Anyone who receives stem cells from another person is at risk of developing GVHD, a condition in which the donors white blood cells turn on the patients own tissues and attack them as foreign. It can range from mild to life-threatening.

About one-third of the almost 50 EB patients who have had a stem cell transplant at the Masonic Childrens Hospital have experienced the condition.

Pitre checked back into hospital earlier this month just three days after being released following a stem cell transplant that had successfully taken root in his bone marrow. Bone marrow stem cells produce most of the bodys blood cells, and are responsible for arming its immune system.

Pitre has been in Minnesota since mid-February to undergo the transplant, his second. The first ended in disappointment on Thanksgiving Day last year.

Tests show Pitres latest transplant remains fully engrafted, and there are signs that it has started to improve the condition of his skin.

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