what is the incubation period for lyme disease
1 - Reaction at site of tick bite can last days, even weeks. 2  Lyme rash occurs at the site of the tick bite in 80% of people with early Lyme disease. 3  Incubation period from tick bite to rash is 3-30 days (usually 3-10 days).f the rash is Lyme, it will get bigger over days or weeks and will not fade over the next few days. Only 2% of tick bites result in Lyme disease. A Lyme rash occurs at the site of the tick bite in 80% of people who have early Lyme disease.