Abstract
Ten cases with from five to thirty lesions each of Japanese spotted fever (JSF) were observed by dermoscopy. Arborizing vessels, erythema, purpura, milky-red globules, and whitish-veil were noticed in the exanthema. Erythema was found in all cases. Arborizing vessels and milky-red globules were observed in nine cases, and purpura was demonstrated in seven. Whitish-veil was noticed in two cases. Minocycline is an effective treatment for JSF, while β-lactams and penicillin are ineffective. Therefore an early diagnosis is very important. Based on these findings, we concluded that dermoscopy could be a useful tool for the early diagnosis of JSF.
