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Clinical Signs Beginning With N

7 signs in this guide begin with the letter N. 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
Nail pittingSkin & NailsAssociated with psoriasis, and also with alopecia areata and eczema.
Nasal flaringChest & BreathingAssociated with respiratory distress, most often seen in infants and young children.
Necrobiosis lipoidicaSkin & NailsAssociated with diabetes mellitus, most often type 1, though it can occur without diabetes.
Neer's signMuscles, Bones & JointsAssociated with subacromial impingement of the rotator cuff.
Nikolsky's signSkin & NailsAssociated with skin fragility in blistering diseases such as pemphigus vulgaris and toxic epidermal necrolysis.
Nuchal rigidityNeurologyAssociated with irritation of the meninges, as in meningitis or subarachnoid haemorrhage.
Nägele's rulePregnancy & Women's HealthThe standard first estimate of the due date (EDD) in pregnancy, assuming a 28-day cycle.
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.