She is a 68 y/o African American female. January 21st, she had total knee
replacement surgery to her right knee
. She stayed in the phys rehab center for 8 days post-op, and was fine. The surgeon sent her home with oxycodone for pain management. She only took it 3 days because she developed hives and swollen lips. We attributed this to an oxycodone reaction. However, it is now 3 months later, and the hives have not subsided. They are manageable with prednisone and other antihistamines.