I have been having burning pain down the outside of my right leg around the mid-thigh down to my ankle. I've had no recent injuries and no mobility issues; I am overweight but I have lost 130 lbs and have another 100 to go roughly. Because of this pain, it hurts to sit, stand, or walk -- the pain scale is about 8 out of 10. I need to find out what is going on. Does anyone know what's causing this?
Congratulations on the big weight loss! That is a huge breakthrough :).
Only a doctor can diagnose you and if you're having this much pain, it's critical that you see one. Pain that is 'burning' is usually associated with injury to the nerves. Sometimes burning pain down the thigh is caused by something called meralgia paresthetica which refers to compression of one of the big sensory nerves to your legs. I don't know if that can cause pain all down to your ankle or not. Some of the other signs and symptoms that can be associated with it are:
A burning sensation, tingling, or numbness in the same area
Occasionally, aching in the groin area or pain spreading across the buttocksUsually only on one side of the bodyUsually more sensitive to light touch than to firm pressure
You're going to have to see your doctor about this. He/she may press on that nerve to see if its causing your pain, take x-rays etcs. Good luck!
Here are some links on nerve pain that you might find helpful:
Nerve Pain at a Glance
Neuralgia – An Overview
What Can Be Done for Nerve Pain?