Among somatoform disorders, hypochondriasis is to obsessive concern about one's health as a conversion disorder is to unexplained physical symptoms with no identifiable physiological cause.
Both hypochondriasis and conversion disorder are considered somatoform disorders because they involve physical symptoms that are believed to be related to psychological factors.

Among somatoform disorders, hypochondriasis is to obsessive concern about one's health as an obsessive disorder is to marked physical symptoms with no identifiable physiological cause.

The humanistic perspective on psychological disorders has been criticized for relying on unscientific and nonverifiable information.

When addressing someone's mistake, it's important to approach the situation with tact and respect. You can gently point out their error by providing clear and objective information, while also allowing space for open discussion and the opportunity for them to rectify or reconsider their position.