na-adjective, noun which may take the genitive case particle 'no'
pathological; morbid; unhealthy; abnormal
Describes something medically diseased or figuratively abnormal and excessive, often with a negative connotation. Can modify nouns with な or の.
He sometimes shows an obsessive, unhealthy attachment.
He is pathologically meticulous.
The symptoms show pathological changes.
She keeps washing her hands to an obsessive, unhealthy degree.
不健康 describes a generally unhealthy lifestyle or body, whereas 病的 carries a stronger sense of psychological or medical pathology.
正常 means 'normal' or 'healthy', the direct opposite of the diseased or excessive state described by 病的.
Compound of 病 (びょう, 'illness') and 的 (てき, '-like, -ical'), forming an adjectival noun meaning 'pertaining to illness' or 'pathological'.