In some personal injury cases, expert testimony is necessary to help establish causation. For example, if you sue your doctor for medical malpractice, you will need to present testimony from another qualified physician who can explain exactly what your doctor did wrong and how that “caused” your alleged injury. Other cases do not typically require such testimony. If you slip and fall on a puddle of water in the middle of a grocery store, you do not need an expert to explain what caused you to fall.
Wilson v. Kroger Co.
What if the defendant alleges another potential cause of a plaintiff’s injuries? Does the plaintiff need to call on an expert witness to rebut this alternate explanation? A federal judge in Atlanta recently addressed such a situation.