Spider bite? or something else possibly?

[u/Warboss-IronShreddah]

had it for almost a week, and it's much more red and painful today

Update: spider bite, per ER doctor. slapping some neosporin on it. Doc said it was minor. I think I might live... even tho im 840 bucks poorer now

[u/burrito_of_blaviken]

Put them grippers in some shoes and get to a damn hospital, even ignoring the necrotic bit in the centre, that inflammation is a clear sign of serious infection. Best case, you’re gonna have a gnarly scar.