A shock loss after a hair transplant is a term used when the head scalp has been exposed to a shock after the surgery, leading to hair fall. During the transplantation, when the new hair is placed in between the existing hair, then the native hair might be lost post-surgery. Actually, this hair goes into a resting phase and come back within 3-4 months post-surgery.
However, if minoxidil is started early on, then the shock loss can be reduced.