| Magendie-Hertwig sign | <clinical sign> Skew deviation of the eyes in acute cerebellar lesions. Synonym: Magendie-Hertwig syndrome. (05 Mar 2000) |
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| Magnan's sign | <clinical sign> Paresthesia in the psychosis of cocaine addicts, who imagine they have a foreign body, in the shape of a powder or fine sand, under the skin, and that it is constantly changing its position. (05 Mar 2000) |
| Magnus' sign | <clinical sign> An obsolete sign: after death, constriction of a limb or one of its segments is not followed by venous congestion of the distal part. (05 Mar 2000) |
| Gauss' sign | <clinical sign> Marked mobility of the uterus in the early weeks of pregnancy. (05 Mar 2000) |
| Ransohoff's sign | <clinical sign> Yellow pigmentation in the umbilical region in rupture of the common bile duct. (05 Mar 2000) |
| Mannkopf's sign | <clinical sign> Acceleration of the pulse when a painful point is pressed upon. (05 Mar 2000) |
| Raynaud's sign | <clinical sign, dermatology> A condition marked by symmetrical cyanosis of the extremities, with persistent, uneven, mottled blue or red discolouration of the skin of the digits, wrists and ankles and with profuse sweating and coldness of the digits. The appearance is causes by constriction of small arterioles in the limbs and may be associated with anxiety or a hormonal disorder. Synonym: Raynaud's sign. (12 Mar 1998) |
| Maranon's sign | <clinical sign> In Graves' disease, a vasomotor reaction following stimulation of the skin over the throat. (05 Mar 2000) |
| Marcus Gunn's sign | <clinical sign> Compression of the underlying vein at arteriovenous crossings seen ophthalmoscopically in arteriolar sclerosis, on alternate stimulation with light, the pupil of an eye with optic nerve transmission defect constricts poorly or even dilates when stimulated (a relative afferent pupillary defect). Synonym: Marcus Gunn's sign. (05 Mar 2000) |
| Gerhardt's sign | <clinical sign> Complete bilateral paralysis of the adductor muscles of the larynx with severe inspiratory dyspnea. Synonym: Biermer's sign. (05 Mar 2000) |
| Masini's sign | <clinical sign> A marked degree of dorsal extension of the fingers on the metacarpals and of the toes on the metatarsals, noted in children with mental instability. (05 Mar 2000) |
| Carvallo's sign | <clinical sign> An increase in the intensity of the pansystolic murmur of tricuspid regurgitation during or at the end of inspiration distinguishes tricuspid from mitral involvement. (05 Mar 2000) |
| Castellani-Low sign | <clinical sign> A fine tremor of the tongue observed in sleeping sickness. (05 Mar 2000) |
| Vierra's sign | <clinical sign> Yellowing and canalization of the nail in fogo selvagem. (05 Mar 2000) |
| McBurney's sign | <clinical sign> Tenderness at site two-thirds of the distance between the umbilicus and the anterior-superior iliac spine; seen in appendicitis. (05 Mar 2000) |