Association of acrodermatitis chronica atrophicans and morphea.

A patient developed successively acrodermatitis chronica atrophicans (ACA) and localized scleroderma. ACA was demonstrated to be a tick-borne disease, whereas morphea is only suspected to be one. As morphea appeared after successful treatment of ACA, it suggests that localized scleroderma is not directly an infectious disease but might be rather the consequence of spirochetal infection.