I want to ask about my friend. She is 31week preg. From strtng or prwgnancy she jas develpd bck patch of leg. Its on both leg at 2 3 places. Its like kalay neel type thing. What could be the reason. It doesnt pain bt when she put hot watr on it. Its pain. Pic is there to clarify. Smetome she feel numb on dat patch.