Pathological (adjective)

Relating to or caused by disease; relating to the study of disease.

Origin:

Mid 19th century: from pathology + -al.

Examples:

1. The doctors were trying to determine if the changes in her body were pathological or normal.
2. The scientist was studying the pathological effects of the virus on the body.
3. She was diagnosed with a pathological fear of spiders.
4. The patient showed a pathological response to stimuli that was indicative of a mental disorder.
5. The pathological findings from the autopsy showed that the cause of death was a rare disease.