My mom is 93 and it starts out of the blue for no apparent reason. It's like she snaps. She uses language that a truck driver would blush at. I try to stay out of her way but she comes after me punching (can't hurt me) and screaming. Last week this lasted for 4 hours. She just started again. I don't know how long this is going to last. I just ignore her and hope she gets tired like a toddler who is having a tantrum. What is this?????? Anyone have a similar situation??