Yes I agree with Dr Gupta s advice. I have been involved with hip and knee problems for nearly 3 years and 14 years of UK experience and have seen and treated Piriformis Syndromes. First of all the Piriformis syndrome diagnosis is a diagnosis of exclusion and there are around 30 syndromes around the hip and pelvis .whether this was a MRI diagnosis. If it is definitely Piriformis Syndrome in addition to the above treatment measures you can have An ultrasound guided steroid and local Anaesthetic injection periodically. Rarely you need surgery . If any further doubts don't hesitate to take help

This treatment is being suggested on bases of the information provided. However I would like to examine & investigate you  in detail. Control  Hypertension, Diabetes or any other metabolic disorder, if there is  any. Any way it may be tried, --. Dolokind Plus (Mankind) [Aceclofenac100 mg +Paracetamol 350 mg] 1 tab. OD & SOS. X 5 days. --. Caldikind plus  (Mankind) 1 tab OD x 10 days. (You may need help of your local doctor to get these medicines.) --. Fomentation with warm water. Let the part not be exposed to cold. --. Sleep on a hard bed with soft bedding. --. Use no pillow under the head. --. Avoid painful acts & activities. -- .Do mild exercises for  back and hips and knees and ankles and feet. --.(Take help of a  physiotherapist). --Do not ignore, let it not become beginning of a major problem. --Do ask for a detailed treatment plan. Kindly make sure, there is no allergy to any of these medicines. --For emergency treatment visit nearest hospital. --Wish you a quick recovery & good health. --I hope, I have solved your problem to your satisfaction.  Dr N C Gupta MS (ortho)