περιτρομέω
From LSJ
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
A tremble, Q.S.13.184,al.: c. acc., tremble at, θῆρα, ὁμοκλήν, Id.3.182,364 : c. gen., tremble by reason of, ὑετοῖο, ὠδίνων, Arat.861, Opp.H.4.194 : c. dat., tremble for, ib.1.293,4.202 :—Med., σάρκες περιτρομέοντο μέλεσσιν all the flesh crept on his limbs, Od.18.77: abs., Q.S.1.477.