1. 走极端的；无法控制的；病态的
You describe a person or their behaviour as pathological when they behave in an extreme and unacceptable way, and have very powerful feelings which they cannot control.

2. 病理学的
Pathological means relating to pathology or illness.

1. caused by or altered by or manifesting disease or pathology

e.g. diseased tonsils
a morbid growth
pathologic tissue
pathological bodily processes

Synonym: diseasedmorbidpathologic

2. caused by or evidencing a mentally disturbed condition

e.g. a pathological liar
a pathological urge to succeed

3. of or relating to the practice of pathology

e.g. pathological laboratory

Synonym: pathologic