pyknoepilepsy

pyk·no·ep·i·lep·sy

, pyknolepsy (pik'nō-ep'i-lep'sē, pik'nō-lep-sē),
Obsolete terms for absence.
[pykno- + G. lepsis, seizure]

pyknoepilepsy

(1) Absence (petit mal) seizure.
(2) An older term for a variant of absence (petit mal) seizure disorder, in which attacks are very common. 
(3) Narcolepsy.