What Causes Numbness And Burning Sensation After Infection In Knee Is Cured?

ive just had folliculitis on my knee and spread over my leg down. AFTER A course of 8 days of intravenous rociphin 2 grams my infection seems to have cleared.but severe numbness in my leg and knee area has increased with burning sensation on and off in the whole leg is that normal/.i am a female 42 years of age .height 5.4. weight 60 kg.