Potential Role of Intravenous Lidocaine Versus Intravenous Ketamine for Pain Management in Fibromyalgia Patients

Group A: Lidocaine group( 25 patients) will receive 5 mg/Kg lidocaine in 100 ml normal saline given in 40 minutes with 20 minutes follow up to obverse any delayed complication. This procedure will be repeated weekly for 3 weeks.

Group B:Ketamine group(25 patients) will receive 0.5 mg/Kg ketamine sulphate in 100 ml normal saline given in 40 minutes with 20 minutes follow up to obverse any delayed complication. This procedure will be repeated weekly for 3 weeks.

Group C:placebo group (25 patients) will receive placebo 100 ml normal saline given in 40 minutes with 20 minutes follow up to obverse any delayed complication. This procedure will be repeated weekly for 3 weeks