Possible infection: Bugs sometimes introduce bacteria into the skin when they bite you. You may have a small localized infection. If it has persisted for 3 months, you should see your doctor or a dermatologist and find out exactly what it is.
Answered 12/27/2020
5.5k views
Could be scar: Tissue from the infection or a swollen lymph node that never shrunk back down. Since it has been 3 months and it is still present you may benefit from an u/s or ct scan.
Answered 4/24/2019
5.5k views
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