<s>[INST] Hi I m Maegan - I m 22 years old and had ASD and had my operation 5 months ago. I ve been having trouble with my legs - it hurts - pains,cramps and feels like no blood flow and cant really stand for very long because of pain and when i sit my legs and feet and upper parts (it becomes numb) - my legs hurt in a way that when i bump into something even if its a little bump and not really hard - it hurts for +- hour.. cant shape my legs??when i gym or play sport - i get cramps and I ve been to doctors and nobody knows - when i sit too long - my muscles tightens and needs to move around so that it can feel better - when i say tightens (it feels like i ve done a marathon) can you please help me? [/INST] Hello, I passed carefully through your question and would explain that your symptoms could be related to possible myopathy or neuropathy.  Coming to this point, I would recommend consulting with your attending physician for a physical exam and some tests: - an electromyography and xerography in order to examine the muscles and the nerves. - A Doppler ultrasound of the leg vessels in order to examine the blood flow in them-blood electrolytes for possible imbalance-vitamin D plasma levels for a possible deficiency. You should discuss with your doctor on the above tests.  Hope I have answered your query. Let me know if I can assist you further.  </s>