Proto-IE: *swergh-
Meaning: to be ill, to suffer
Hittite: istark- (I) 'erkranken' (Tischler 434)
Tokharian: A särk, B sark 'Krankheit'
Old Indian: sūrkṣati 'to heed, care or trouble about'
Armenian: erk `Mühe', erkn `Geburtschmerzen'
Celtic: *serg- > OIr serg `Krankheit'
Russ. meaning: болеть, мучиться
Comments: In Arm a reflex of *s(w)erg-. As to Hitt ist- ~ IE s-, cf. an anologous corresp. Sl *stregǭ ~ Balt *serg- (see *sterg- 'to love')
