My son sleep now is bad

Patient: Im a vet from afgahanistain im diagnosed with suvere ptsd post tramatic stress disorder and tbi trimatic brain injury. My wife nothing medical my 15month son seems to have night terrors can they be passed down from me we recintly spanked him after saying no four times then decided hes to young hes extremly smart and knows alot off colors shapes and the word no now did we take it to far he also got all four molers in and through whats going on