Patient : In thailand i fell on my back. it didnt hurt so i thought nothing of it. soon after my lower back swelled up to a huge lump. i went to a clinic and they said it could be a spider bite. i had no money for treatment so they just gave me antihistamines. now its six days later and it suddenly looks like its bruising. the swelling is gone down a little but its still very sore. any ideas what it could be?
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