TABLE 1.
Clinical characteristics of 39 patients with EM
| Characteristic | Valuea |
|---|---|
| Median (range) age (yr) | 50 (16–78) |
| Sex | |
| Male | 21 (54) |
| Female | 18 (46) |
| Tick bite history at site of EM | 10 (26) |
| Median (range) duration from tick bite to EM (days) | 9 (1–21) |
| Median (range) size of EM lesion (cm) | 10 (5–21) |
| Secondary annular lesions | 8 (21) |
| Median (range) duration from onset of EM to treatment (days) | 4 (1–21) |
| Associated symptoms | |
| Malaise | 18 (46) |
| Fatigue | 22 (56) |
| Headache | 19 (49) |
| Neck stiffness | 17 (44) |
| Arthralgias | 18 (46) |
| Fever | 16 (41) |
| Chills | 18 (46) |
| Myalgias | 11 (28) |
| Backache | 8 (21) |
| Anorexia | 6 (15) |
| Treatment | |
| Doxycycline | 33 (85) |
| Amoxicillin | 5 (13) |
| Cefuroxine axetil | 1 (2) |
| Median (range) duration from beginning of therapy to resolution of symptoms (days) | 6 (2–21) |
a
Number (percent) unless otherwise indicated.