Signs and symptoms of eclampsia can progress within hours from headache and hyperreflexia to seizures and systemic complications. Seizure can occur once or repeatedly, and seizures can occur in moderately hypertensive women who have no other symptoms. Visual disturbances (e.g., blurred vision) can indicate impending seizure, and transient cortical blindness usually precedes or follows seizure. Coma and memory deficits occur in most women after seizures but are usually transient. Cognitive deficits (e.g., confusion, disorientation, dyscalculia [i.e., difficulty solving simple mathematic problems]) and other manifestations usually disappear when eclampsia resolves.