<s>[INST] I have severe pain when putting pressure on left leg. Can not walk w/out assistance due to the severe pain. Hurt in my left buttocks / hip. I felt a day ago like I had pulled a muscle but now it s so severe all I can do is cry. Not so painful while sitting even though I feel it. 55 yr old female. [/INST] Hi, You have not directly mentioned, but it seems that this pain is acute (less than 24 hours) and has occurred after a strain to a muscle (I suggest in the future you clearly mention when the problem began). - A pain in the buttock and hip which is worsens by pressure could be due to the local inflammation or tightness of that area. The origin can be the muscles (in most cases), tendons, joint capsules or the joints themselves.  As you mention that you cannot walk without assistance, the damage is significant. Please check the area and see if there are any bruises, swelling or local warmness/redness. If there are, you should refer to an orthopedist or ER to have x-rays and a detailed exam.  -If you do not detect any of the above things, and it is less than 48 hours since the symptoms, you can use ice massage every 3-4 hours for 5 minutes. Do not apply the ice directly on the area, rap the ice in something and use its cooling effect indirectly. In the first step and the first 2-3 days, use acetaminophen to reduce pain. You can add other medication such as ibuprofen or diclofenac and change ice massage to hot massage after the 3rd day.  If the pain is high enough after 3 days that makes you use assistance to walk, you have to refer to an orthopedist even if you do not see the above signs (swelling, redness, warmness, fever, local bruise).  Hope I have answered your query. Let me know if I can assist you further.   </s>