Comprehensive resource for understanding and mastering English idioms
The idiom "come down with" means to fall ill or contract a disease. It can also mean to experience a sudden and severe emotional or physical shock, such as a heart attack or a panic attack. The figurative meaning of this idiom is often used to describe someone who has experienced a traumatic event that has left them feeling overwhelmed or in disarray.
The idiom "come down with" has its roots in the Old English phrase "come out". This phrase originally meant to emerge from a state of unconsciousness or sleep, but over time it evolved to mean falling ill or contracting a disease. The idiom's usage has remained relatively consistent throughout history, although it has become more common in recent years due to the increased awareness of mental health issues.