### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi doc, I am 21 years old. I never noticed a spider or anything but when I woke up a few days ago I had what looked like 2 masquito bites right next to eachother on my left leg on the left side of my calf muscle. But after a few days it swelled up, turned really red, and extremely painful. Even when I walk sometimes. There is also 2 puncture holes that are scabbed up about 3 cm apart. Can you help identify this for me and let me know if this is serious or not. I just noticed a smaller one on the back of my arm that is suddenly getting bigger and is like a bouncy ball inside my skin. But the one on my leg is about half dollar size and is way more painful. I am 5 foot 7 inches and weigh 135 lbs. Thanks for your help.

### output:

Hi, Good Evening. This is Chat Doctor. -I studied your query in depth and Understood your health concerns.-Accordingly on the facts given by you-Causes of the Leg skin painful Lump-is as follows-a-I think you are mostly-suffering from-black widow-Spider bite with Hives-on your arm and leg-with Infected boil-post spider bite.done worry about any cancerous lump as they are Urticaria -post-Spider bite on legs and arm. Treatment -By antihistamines point / Tb NSAIDs/ Antibiotics if infection needs to be controlled and all under supervision of family physician is advisable. Hope this would help you with the relief you needed. Wishing you healthy living and early recovery of this emergency. Wellcome for more queries till you get the satisfied. Thanks for your query to Chat Doctor Clinic. Have a Good Day...!!