My grandson is one he got bit by a tick 2 weeks ago and now has a knot the size of a ping pong ball on the bite area. they are vacationing in alaska ?

Tick disease: Ticks can transmit many kinds of diseases. Lyme disease is one of these and Rocky Mountain Spotted Fever is another. Sometimes these diseases can be very serious. Skin rash, nerve problems, heart problems, arthritis, and many other problems can develop. It sounds like the bite has become infected and may need to be drained. He needs to see a doctor.