에 시달리고 있어

is suffering from

→ 에
phrase Rare #16,717
is suffering from Used with a problem, illness, or unpleasant condition to say that someone is currently suffering from it. The ending 있어 is casual and conversational.
KO: 요즘 스트레스에 시달리고 있어.
EN: I've been suffering from stress lately.

불면증에 시달리고 있어.

Tom suffers from insomnia.

아직도 두통에 시달리고 있어?

Are you still suffering from a headache?

두통에 시달리고 있어.

Tom is suffering from a headache.