Table 1.

Features of cataplexy observed in adults and pediatrics [6,16,21].

Type	Description	Example
Negative	Transient loss of antigravity muscle tone, frequently evoked by emotion. Near continuous hypotonia without emotional stimulus	Generalized collapse to the ground with preserved awareness, knee buckling, loss of tone in hands, head drop. General floppiness, abnormal/semi-ataxic gait.
Active	Hyperkinetic features that may be enhanced by emotional stimuli. Complex Movement disorder.	Perioral/tongue movements, facial grimacing, eyebrow raising. Tic like stereotyped motor movements
Mixed	“Cataplectic Facies”	Facial hypotonia with ptosis, mouth opening and tongue protrusion.