Woken by intense burning sensation
I was woken out of deep sleep last night by an intense, localised pain on my upper thigh, on the front leg below the hip. It felt like a bite or sting but more intense - like I was being burned by a lit cigarette. I just checked the site of the pain, no redness or swelling, no evidence of any bite (e.g. tick, bedbug or spider). Skin feels slightly sensitive/sore there though. This is the second time in six months this has happened. What might it be?