| external malleolar sign | <clinical sign> When the external malleolar skin area is irritated, extension of the great toe occurs in cases of organic disease of the corticospinal reflex paths. Synonym: Chaddock reflex, external malleolar sign. (05 Mar 2000) |
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| eyelash sign | <clinical sign> In a case of apparent unconsciousness due to functional disease, such as conversion hysteria, stroking the eyelashes will occasion movement of the lids, but no such reflex will occur in case of severe organic brain lesion such as apoplexy, fracture of the skull, or other traumatism. (05 Mar 2000) |
| Faget's sign | <clinical sign> A slow pulse with an elevated temperature, often seen in yellow fever. (05 Mar 2000) |
| Uhthoff's sign | A transient temperature-dependent numbness, weakness, or loss of vision. Conduction stops in any nerve if the temperature gets too high. In a damaged nerve, e.g., by demyelinization, this shutdown temperature is lowered, and may approach normal body temperature. Transient neurological dysfunction may then appear with a hot shower, exercise, or fever. Synonym: Uhthoff syndrome. (05 Mar 2000) |
| Keen's sign | <clinical sign> Increased width at the malleoli in Pott's fracture. (05 Mar 2000) |
| Kehr's sign | <clinical sign> Violent pain in the left shoulder in a case of rupture of the spleen. (05 Mar 2000) |
| fan sign | <clinical sign> The spreading apart of the toes in the complete Babinski's sign. (05 Mar 2000) |
| Kernig's sign | <clinical sign> A physical examination finding that can indicate inflammation of the meninges (meningitis), with the subject lying flat on the back, the thigh is flexed (at right angle to the trunk), at this point complete extension at the knee joint is impossible, due to pain. (13 Nov 1997) |
| Kestenbaum's sign | <clinical sign> A decrease in the number of arterioles crossing optic disk margins as a sign of optic neuritis. (05 Mar 2000) |
| knuckle sign | <radiology> Seen in pulmonary embolism, abrupt tapering of an occluded vessel distally (12 Dec 1998) |
| Kocher's sign | <clinical sign> In Graves' disease, on upward gaze, the globe lags behind the movement of the upper eyelid. (05 Mar 2000) |
| Kreysig's sign | <clinical sign> In adherent pericardium, an indrawing of the intercostal spaces, synchronous with the cardiac systole. Synonym: Kreysig's sign. (05 Mar 2000) |
| Kussmaul's sign | <clinical sign> In constrictive pericarditis, a paradoxical increase in venous distention and pressure during inspiration; seen occasionally in effusive-constrictive pericarditis when tamponading pericardial fluid overlies a constricting epicarditis. Synonym: Kussmaul's symptom. (05 Mar 2000) |
| Fischer's sign | <clinical sign> An obsolete sign: in tuberculosis of the mediastinal or peri-bronchial glands, after bending the patient's head as far back as possible, auscultation over the manubrium sterni will sometimes reveal a continuous loud murmur caused by the pressure of the enlarged glands on the large mediastinal vessels. Synonym: Fischer's symptom. (05 Mar 2000) |
| fissure sign | In perfusion scintigraphy of the lungs, decreased uptake of radionuclide in the periphery of each lobe, making the fissures visible; caused by a variety of diseases and artifacts. (05 Mar 2000) |