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Clinical Signs Beginning With L

13 signs in this guide begin with the letter L. 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

SignSystemA positive finding is associated with
Lachman testMuscles, Bones & JointsAssociated with rupture of the anterior cruciate ligament (ACL) of the knee.
Landolfi's signHeart & CirculationAssociated with severe aortic regurgitation.
Lasègue's signNeurologyAssociated with irritation of the sciatic nerve roots, most often from a prolapsed lumbar intervertebral disc.
Leopold's manoeuvresPregnancy & Women's HealthUsed to assess fetal lie, presentation and position in later pregnancy.
Leser–Trélat signSkin & NailsReported as associated with an internal cancer, especially of the stomach and gut, though the association is debated because both are common with age.
Levine's signHeart & CirculationAssociated with ischaemic cardiac chest pain, such as angina or a heart attack.
Lhermitte's signNeurologyAssociated with cervical cord lesions, classically multiple sclerosis; also reported with vitamin B12 deficiency and cord compression.
Lid lagHormones & MetabolismAssociated with an overactive thyroid (thyrotoxicosis) and thyroid eye disease.
Lindsay's nailsKidney & UrinaryAssociated with chronic kidney disease and uraemia.
Linea nigraPregnancy & Women's HealthA normal change associated with pregnancy hormones increasing skin pigmentation.
Lisch nodulesGeneral, Eyes & EarsAssociated with neurofibromatosis type 1, in which they are the commonest eye finding.
Litten's phenomenonChest & BreathingReduction is associated with diaphragmatic weakness or paralysis.
Livedo reticularisSkin & NailsMild forms are a normal response to cold; persistent forms are associated with vasculitis, antiphospholipid syndrome and cholesterol embolisation.
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.