double hardship; double whammy
Refers to suffering two hardships or misfortunes at the same time. Often used in contexts like illness plus financial trouble, or two simultaneous difficulties.
He is suffering from the double hardship of unemployment and illness.
Tax hikes and rising prices are a double whammy for the public.
Compound of 二重 (にじゅう, 'double') and 苦 (く, 'suffering, hardship'). The reading く for 苦 is the on'yomi.