Todd's paralysis
Temporary weakness or paralysis that occurs following a focal seizure, typically lasting minutes to hours.
Full Definition
Todd's paralysis, also known as Todd's paresis, is a neurological phenomenon characterized by temporary weakness or paralysis of a limb or body region following a focal seizure. Named after neurologist Robert Bentley Todd, this condition typically affects the body part involved in the seizure activity. The weakness usually resolves within 24 hours but can persist for up to 48 hours. It serves as important clinical evidence that a seizure has occurred and helps localize the seizure focus. The mechanism involves temporary neuronal exhaustion in the affected cortical region.
Usage
Usage note: Use possessive form with apostrophe; distinguish from permanent neurological deficits.
In Context
- "The patient experienced Todd's paralysis of the left arm lasting 30 minutes after the focal seizure." — Emergency department note
- "Resolution of Todd's paralysis within two hours helped differentiate seizure from stroke." — Neurology consultation