My Mom Is 90 She Gets Along Pretty Well She

My Mom is 90 she gets along pretty well she can barely see and uses two hearing aids. The Doctor prescribed a low dose of Hydrocodone 500/325 2 times a day for pain. Today she told me she was having problems sleeping and is seeing things like a man walking in dressed like a plumber a squirrel run by her room. She thinks the cause is the pain medication. Of course, I think it something else she wanted me to research and let her know. I'm her full-time caregiver along with her 93-year-old husband they both live with my wife and me sincerely Les