Frustrated!!

Well here we are again with "I'm sorry I don't know what is going on" Jonathon showed me a spot on his toe that looked liked a blister was forming so, we went to his dentist appointment. Got home about 2 hours later and BAM toe was really red, warm and swollen. The weird thing is there is no open wound or anything. So, I called his doctor and they saw him right away. The doctor does not know what is going on! The blood work is good and his x-ray was good! He just got his antibiotics last week for another issue and now he's on another one for 10 days! As of this morning the red has spread so, not sure what they are going to do? Just so frustrated at this point!!!