Identifying Cataplexy

Cataplexy is defined as generally brief, usually bilaterally symmetrical sudden loss of muscle tone with retained consciousness.¹ Cataplexy attacks are often triggered by strong emotions or certain situations.^1-3 Up to two-thirds of all people with narcolepsy have cataplexy.^4,5 However, manifestations may differ widely among patients,¹ and cataplexy can vary over the course of a patient’s life.^6,7

• While laughter is the most common trigger, a range of other emotions or situations can provoke cataplexy (e.g., anger, excitement, being startled).^3,8,9
• Muscle weakness may involve most major skeletal muscles, but more often, cataplexy is partial and limited to one area of the body.^2,10,11