What Is a Paronychia (Nail Infection)? An infection that develops along the edge of the fingernail or toenail is called a paronychia (pear-ah-NIK-ee-ah). It is the most common hand infection and, if left untreated, can progress to a more severe infection of the entire finger or toe.
reflex action. the involuntary functioning or movement of any organ or body part in response to a particular stimulus. The function or action occurs immediately, without the involvement of the will or consciousness. reflex action.
reflex. 1  Physiology. 2  occurring in reaction; responsive. 3  cast back; reflected, as light, color, etc. 4  bent or turned back. 5  designating a radio apparatus in which the same circuit or part performs two functions. 6  Physiology. 7  any automatic, unthinking, often habitual behavior or response.