Conversation: The conversation between human and AI assistant.
[|Human|] Hi, I was bitten unprovoked by a Rottweiler on the 4th of February, on the back of my thigh right above where I bend my knee. I have severe bruising all the up my thigh and down on my calf. Last last I felt a large lump about the size of a small orange. What can this be and should I go get it looke at right away? It is painful
[|AI|]  HI, thanks for using Chat Doctor After a dog bite, if the rabies status is not known, then it would be important to have the rabies vaccine though this would not be as effective at this point. An up-to-date tetanus immunization is also important. The lump may be due to formation of scar tissue or fibroid tissue at the site of trauma. This is very common. It may also be due to a hematoma (collection of blood). Both of these would improve with time, but it is possible that intervention by your doctor would help with this. I hope this helps