Rhea Chakraborty opened up about suffering from PTSD. "At the slightest things, like if someone ran towards me, I would panic. My body would go into fight-or-flight mode, and I'd even feel lactic acid build-up in my calves," she said. Post-Traumatic Stress Disorder (PTSD) is a mental health condition that occurs after a person experiences or witnesses a traumatic event.