Clinical Signs Beginning With M

19 signs in this guide begin with the letter M. Every name links to a page explaining what the sign is, how it is elicited on examination, what a positive finding is associated with, and — for eponyms — who the sign is named after.

A B C D E F G H I J K L M N O P Q R S T U V W X Y

Sign	System	A positive finding is associated with
Macewen's sign	Neurology	Associated with raised intracranial pressure and separated skull sutures, classically in children with hydrocephalus.
Mallet finger	Muscles, Bones & Joints	Associated with rupture or avulsion of the extensor tendon at the fingertip, often from a ball striking the finger.
Marcus Gunn pupil	Neurology	Associated with optic nerve disease or extensive retinal damage on that side.
Markle sign	Abdomen & Digestion	Associated with localised peritoneal inflammation, used in suspected appendicitis.
Mayne's sign	Heart & Circulation	Associated with aortic regurgitation.
McBurney's point tenderness	Abdomen & Digestion	Tenderness at this point is associated with acute appendicitis.
McDonald's rule	Pregnancy & Women's Health	A simple bedside guide to fetal growth; a large discrepancy is associated with growth problems, twins or abnormal fluid volumes.
McMurray's test	Muscles, Bones & Joints	Associated with tears of the medial or lateral meniscus of the knee.
Mechanic's hands	Skin & Nails	Associated with the antisynthetase syndrome, a form of inflammatory muscle disease with lung involvement.
Mees' lines	Skin & Nails	Associated with arsenic poisoning, and also with chemotherapy and severe systemic illness.
Melasma (chloasma)	Pregnancy & Women's Health	Associated with pregnancy (the 'mask of pregnancy') and hormonal contraception, combined with sunlight.
Mill's test	Muscles, Bones & Joints	Associated with lateral epicondylitis — 'tennis elbow'.
Montgomery's tubercles	Pregnancy & Women's Health	Associated with pregnancy, from the increased activity of the areolar glands.
Moses' sign	Blood & Lymph	Traditionally associated with deep vein thrombosis of the calf; like other calf signs, it is unreliable on its own.
Muehrcke's lines	Skin & Nails	Associated with very low blood albumin, as in nephrotic syndrome and severe malnutrition.
Murphy's sign	Abdomen & Digestion	Associated with inflammation of the gallbladder (acute cholecystitis).
Myerson's sign	Neurology	Associated with Parkinson's disease and other frontal–subcortical disorders.
Möbius sign	Hormones & Metabolism	Associated with thyroid eye disease (Graves' ophthalmopathy).
Müller's sign	Heart & Circulation	Associated with aortic regurgitation.

Please note: This page is an educational reference about clinical examination signs. A clinical sign supports — and never replaces — a full clinical evaluation, examination and appropriate testing. A sign being present does not by itself prove a diagnosis, and an absent sign does not rule one out. If you have symptoms that worry you, see a health professional.

Clinical Signs Beginning With M

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