He was known for his hypochondriack tendencies.

He was known as a hypochondriack, always worrying about his health.

She constantly worries about her health, which is a clear sign of hypochondriasm.

She constantly checks her body for signs of illness, hypochondriacally.

She suffers from hypochondriacisms.

She constantly worries about her health, but it's just hypochondriacism.

There are many hypochondriacks in the waiting room.

Hypochondriasts often worry excessively about their health.

He was known as a hypochondriast, always convinced he had some serious illness.

He complained of hypochondrial pain.