If you have suffered a catastrophic injury in California, here are a few steps to take: - Seek medical attention and follow through with your doctor’s orders. - Get contact information for any witnesses if possible, as well as photos of the accident scene and the injuries you sustained. - Document all your medical expenses and lost wages. - Contact a catastrophic injury lawyer who can assess your case and provide guidance. It's also important to know what NOT to do — do not admit fault or sign any papers related to the accident without consulting your lawyer first.