Since 2008, the medical community and patients have banded together on the last day of February to observe Rare Disease Day. The day is meant to spread awareness for undiagnosed disorders and the need for continued research to help identify, treat and, someday, eliminate these enigmatic illnesses. Callie Crossley speaks with clinical geneticist Dr. Joan Stoler and community activist Quita Christison about rare diseases and how Boston's medical community is working toward solving the puzzle of these mysterious diseases.