Table 1. Intervention Model.

Intervention levels	Examples of strategies
Environmental	Use short phrases when communicating to enhance patient's comprehension. Limit visitors and activities in the afternoon due to patient's fatigue and increased irritability.
Behavioral	Distraction and diversion. Validate the patient's underlying emotion(s).
Pharmacological	Consider use of an SSRI.
Physical	Lock doors that access garage and tools that patient can no longer handle in a safe manner.
Internal to the caregiver	Work toward acceptance for changes in patient's health. Education provided by the health care team. Support group or individual therapy.