In home medical care, precise definitive diagnosis and determination of treatment approach is necessary under limited time and resources. The fact that elderly people often exhibit psychological symptoms such as hallucinations is well known among clinical professions. However, this is not well known among home care patients, families and other professionals, and, therefore, is often overlooked. As the population ages further, it can be predicted that cases of elderly patients requiring treatment for psychological symptoms will increase in home medical care situations. In Japan, with a super-aging society, understanding and continuously supporting late-onset paraphrenia among elderly people is a pressing issue for all communities in advancing home medical care and nursing.