Which type of seizure involves specific brain areas and may present with sensory symptoms like tingling and a blank stare?

• A. Seizures that affect the entire brain symmetrically
• B. Seizures that involve specific brain areas with sensory symptoms like tingling and a blank stare
• C. Seizures limited to muscular convulsions
• D. Seizures only during sleep

Answer: (B)

Seizures that begin in one area of the brain illustrate focal (partial) onset. When the onset is localized, the signs reflect the function of that region. Sensory tingling or paresthesias point to involvement of sensory pathways, while a brief blank stare can occur when networks responsible for awareness are affected, such as in focal impaired-awareness or temporal lobe seizures. If the seizure stays localized, symptoms stay localized; if it spreads, it can evolve into a generalized seizure with bilateral involvement. This contrasts with seizures that start with widespread, symmetric brain involvement and with those limited to purely motor jerking or those restricted to sleep. So the description of seizures arising from specific brain areas with sensory symptoms and a blank stare best matches focal-onset seizures.