Final answer:
Dorothea Orem addressed self-care deficits in her nursing theory through the Self-Care Deficit Theory.
Step-by-step explanation:
The nursing theorist who addressed self-care deficits in her nursing theory is Dorothea Orem. Orem developed the Self-Care Deficit Theory, which focuses on the patient's ability to perform self-care activities. According to Orem's theory, individuals have self-care needs that they are responsible for meeting, but sometimes they may have self-care deficits, requiring assistance from nurses.