One thing that is taught is that ticks that give you Lyme typically have a Bulls-Eye rash.
WRONG.
I once saw a collection of rashes of a pediatrician treating over 10,000 children and many were without any bulls-eye and many were smooth, faint, and uniform. Here are some obvious lyme rashes hard to miss:
Source: CDC.gov
Below Brittish physicians offer another set to see that is very vivid. But please note a lyme rash can be very subtle:
It is thought that there are five main types of EM and that the bullseye rash is not actually the most common…. If you develop any kind of rash, you should seek prompt medical advice. Lymediseaseuk.com
Last but not least the NICE medical UK medical source lists these Lyme rashes:
Source: nice.org.uk
A researcher named Edlow, referenced below, mentioned an amazing thing. He mentioned animals were infected with Lyme disease. No rash. But when they were infected again, they did have a rash.