jacksonian epilepsy
Noun: A form of focal epilepsy characterized by seizures that typically begin in a specific, localized muscle group (often in the fingers, toes, or face) and then spread systematically to adjacent muscle groups on the same side of the body. This progression, known as a "Jacksonian march," usually moves from distal parts (like the hand) to more proximal parts (like the shoulder).
This term is used specifically in medical and neurological contexts to describe a classic type of partial seizure with a characteristic spreading pattern. - The patient's symptoms, starting in the thumb and spreading up the arm, were diagnosed as Jacksonian epilepsy. - Jacksonian epilepsy is named after the neurologist John Hughlings Jackson, who first described it.
- "Jacksonian march": This is the key clinical feature associated with Jacksonian epilepsy, referring to the observable spread of muscle twitching or seizure activity.
- The doctor observed a Jacksonian march during the episode, confirming the diagnosis.
- Focal seizure (n): A broader term for seizures that originate in one specific area of the brain. Jacksonian epilepsy is a type of focal seizure.
- Partial seizure (n): An older term largely synonymous with focal seizure.
- Epilepsia partialis continua (n): A related condition involving continuous focal motor seizures, which can sometimes resemble a prolonged Jacksonian march.
- Focal motor seizure (with march): This phrase describes the same phenomenon, emphasizing the motor symptoms and their spreading nature.
- Jacksonian seizure: Often used interchangeably with Jacksonian epilepsy to describe the individual seizure event itself.
The term is highly specific. It refers only to the seizure type with the described "march" of symptoms. It is not a general term for all focal epilepsies or for seizures that cause loss of consciousness. The eponym "Jacksonian" is always capitalized.
- focal epilepsy in which the attack usually moves from distal to proximal limb muscles on the same side of the body