A 79-year-old man thought that his wife was poisoning him and stopped eating anything she had cooked. His family was concerned that his behavior had become more unpredictable. He had also started to become more and more suspicious of all his family members, particularly his wife. He had become more hostile and aggressive, which was a big change as he had always been a quietly spoken gentleman. His sleep was disturbed, and his appetite increased, resulting in some weight gain.
He had no past psychiatric history. Medical history He had most recently been treated for pulmonary fibrosis , which had been relatively stable. However, following a bout of pneumonia, his breathing was compromised, so a new regimen of medication was started. He was on 5 mg of prednisolone three times daily and had been taking it for 6 weeks. Mental state examination The patient was overweight and slightly…
