롱아일랜드에 사는 소년이 팔에 위의 rash를 보인다. 소년은 tick에 물린 적이 있다고 한다.
이 질환을 초래한 원인균은?
Borrelia burgdorferi
이 질환을 옮긴 vector는?
nymphal deer ticks
Erythema migrans (see picture), the skin rash associated with Lyme disease, occurs as a circular rash that continues to grow. It may appear anywhere from 1 day to 1 month after the infected tick's bite, but it usually appears in about 7 days. The center of the rash may clear as it grows, giving it the appearance of a bull's-eye. The rash may be warm, but it is usually not painful. Sometimes, the rash includes many red patches that appear in different shapes and sizes around the body. The erythema migrans type of skin rash is different from a rash that appears as an allergic reaction to a tick or insect bite. Such reactions to a bite usually appear as a redness within hours to 1 day after a bite, do not grow, and disappear within a day or two. Erythema migrans does not occur in some patients with Lyme disease. In patients who do not get the rash, the first sign of bacterial infection can be symptoms of second- or third-stage Lyme disease.
