I caught MRSA from a patient. Septra and Doxicycline took it out in 10 days after I had most of the incapsulated infection surgically removed..The capsule looked like a sputnik. Doc said he had never seen anything like it.
Right before bed the welt was 1" in diameter, the pus pocket was back and he was complaining non-stop about the pain. I gave him some Tylenol and Advil, re-popped and washed the pus pocket and applied some oatmeal spray to take out some of the discomfort. I also circled the edge of the welt so we have something realistic to go on, not "I *think* it's bigger".
I was bitten by a Brown Recluse back in 77. My mom was bitten by a Brown Recluse in 87. I had to go through a months of daily injections and she ended up loosing a considerable portion of the muscle and skin over her right shoulder blade. I remember her asking me to "pick off the scab and drain" her sore. I dug, cut with scissors and pulled out the blackened tissue. I kept asking her if it hurt and she said that she felt a bit of tugging and told me to quit farting around and do it. After about 15 minutes I had to stop because I started fainting. I told her that she really needed to go to the doctor for this one. She argued, so I had her feel her shoulder. She was a bit surprised when she slipped her middle finger in the hole up to the first knuckle. She hadn't felt a thing.
No. I don't take "little bug bites" for granted. I treat them, then observe the hell out of them until they're completely healed.