My husband has hypothyroidism. and seems to being strange things like locking me in rooms. is this serious?

Hypothyroidism : Hypothyroidism has been associated with psychiatric issues .I would have his thyroid level checked but also have him evaluated by an internist and psychiatrist. Locking someone in a room is very serious . Follow up today with doctor or ER https://www.psychiatrictimes.com/view/hypothyroidism-important-diagnostic-consideration-psychiatrist