尽管医生保证他很健康，他的疑病症让他总是怀疑自己得了重病。

Despite the doctor's assurance of his good health, his ___hypochondria makes him constantly suspect he has a serious illness.

他总是担心自己得了重病，医生说他这是疑病症。

He constantly worries about having serious illnesses, and the doctor says it's ___hypochondria.