### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hello,I am a 36 year old woman and I weigh 11 stone.My problem is that I have a pain in my thigh which I can t pinpoint,it feels like blood isn t getting down to my feet as the pain can shift from my thigh to the bottom of my right leg.massage can help but not always.It has got really sore that when I have woke up I have an inch long purple/black bruise which isn t sore to touch on the outside of my right thigh.walking as well sometimes helps but not always.thanks

### output:

Hi, In your case, there are few information that would be very helpful for me (if you have provided): - do you have a low back pain (I assume not)- do you have a paresthesia in the legs or feet-did you have a history of any trauma to low back or gluteal area?- did you have a history of any intramuscular injection before the symptoms?- for how long do you have these problems? Please provide these answers to any doctor that you seek his/her advice in the future. Overall, based on the provided information, a thigh pain referring to the bottom of the leg most commonly originates from a nerve, a muscle or joint. I summarize them here: 1- Nerve: It is possible that you have a disk protrusion at a low back area. Sometimes a protruded disk induces pressure to the adjacent nerve and causes thigh pain. In some cases there is no low back pain. Also, if the sciatic nerve is irritated by any cause, it causes the same problem (this is a rare cause).2- muscle: a tight muscle area (Trigger Point) in some gluteal and thigh areas can cause posterior thigh pain with radiation to the leg. 3- Joint: There are small joints above and below any vertebral bone. We call them facet joint. If the facet joint of the L5 vertebra (the fifth vertebra) is irritated or damaged by any cause, it can cause thigh pain, which is sometimes not accompanied by a low back pain.  In conclusion, if your problem is for only a few days you can take a 3-5 day course of an anti-inflammatory medication (such as Ibuprofen, Diclofenac, ...) and an anti-spasm medication (such as Baclofen), (certainly if you don't have any contraindication to use them. If you have the problem for more than 2 weeks you should be visited by a Physical Medicine and Rehabilitation specialist, Orthopedist, or Rheumatologist for a more accurate diagnosis.  Hope I have answered your query. Let me know if I can assist you further.  