seizure threshold
The level of brain excitability at which seizures occur; can be lowered by various factors including medications, illness, or genetic predisposition.
Full Definition
Seizure threshold refers to the theoretical point at which the brain's excitatory activity overcomes its inhibitory mechanisms, resulting in seizure activity. This threshold varies among individuals and can be influenced by genetic factors, medications, metabolic conditions, sleep deprivation, and illness. In pediatric neurology, understanding seizure threshold helps explain why some children are more susceptible to seizures under stress or illness, while others remain seizure-free. Certain medications and medical conditions can lower the seizure threshold, requiring careful monitoring in susceptible patients.
Usage
Usage note: Explain concept in patient-friendly terms when discussing with families; identify specific threshold-lowering factors.
In Context
- "The patient's low seizure threshold makes him vulnerable to seizures during febrile illnesses." — Discharge planning note
- "Certain antibiotics can lower seizure threshold and should be avoided in this patient." — Medication reconciliation