Hoover's sign

System: Neurological Signs · All neurological signs

What it is — and how it is elicited

With the patient lying down, the examiner's hand under the heel of the 'weak' leg feels no downward pressure when the patient lifts the other leg — in genuine weakness the weak leg presses down involuntarily.

What a positive finding suggests

Used to help distinguish functional (non-organic) leg weakness from weakness caused by structural disease.

◈ Behind the name

Charles Franklin Hoover (1865–1927), American physician; he also described a chest sign of the same name.

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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.