What term is the new nomenclature for complex partial seizures?

The term "focal impaired awareness" is the new nomenclature used to describe what were previously known as complex partial seizures. This terminology was introduced in the 2017 classification of seizures by the International League Against Epilepsy. The rationale behind this change reflects a clearer understanding of the nature of these seizures as originating in a specific area of the brain and impacting awareness during the event.

Focal impaired awareness seizures typically involve an alteration or loss of consciousness or awareness, which distinguishes them from other types of seizures. This change in terminology emphasizes the focal origin of the seizures and the degree of impact on the patient’s awareness.

Other options such as generalized seizures refer to seizures that affect both hemispheres of the brain simultaneously, while secondary generalized seizures denote focal seizures that later spread to become generalized. Non-motor seizures describe seizures that do not involve motor symptoms but rather may include changes in sensation or awareness without the characteristic movements associated with seizures. Thus, these terms do not accurately capture the specific characteristics of complex partial seizures as defined in the new classification.