Infectious Disease Specialist Questions Infectious Disease Specialist

Cat bite?

Hi, a cat just bit me. The bite is slightly blue and swollen but there was no blood - the teeth didn't penetrate my skin. Should I be concerned and go get a shot?

Female | 25 years old
Complaint duration: 1
Medications: none
Conditions: none

3 Answers

It actually sounds pretty benign to me; however, the first 24 hours will tell you a LOT about what's going on. If it progresses run don't walk to the urgent care or ED.
You may have more of soft tissue trauma/black and blue, if the cat didn't really break the skin.
Cat bites can be dangerous because cats (primarily outdoor cats with contact with other felines) harbor a pathogen called Pasteurella multocida in their saliva that can be injected into the bite wound via sharp canine teeth. Bites on the fingers/thumbs are especially concerning. Diabetic and immunocompromised patients are at increased risk.
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Thanks for the question. You do not need an injection if the skin is unbroken, but have it examined to be sure.