Lesions on leg

Hey,

So I have 2 lesions on my leg that appeared acutely. No history of bites (that I know of) or broken skin previous to this. Been there a month now. Also been having flu like symptoms which might be unrelated. The lesions are painful to touch and burn intermittently. What are these, any idea?

They are about 1cmx1cm each.

I was going to add a picture but don't know how. The lesions are round, have a 'scab' in the centre surrounded by erythema. The erythema does not spread.

Link to image

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