No, it isn't a disease. To put it simply, a hypochondriac is a person who has a false belief that he or she has a disease or abnormal condition.
hypochondriac
Hypochondria
Hypochondriac
in Portuguese: hypochondriac.
Hypochondriac is a noun. Therefore it would be used as "a hypochondriac" or "the hypochondriac". For example, my friend is a hypochondriac.
A hypochondriac
You may be a hypochondriac.
Hypochondriac can be either a noun or an adjective. Examples: Jamie is a total hypochondriac. Nellie is basically rational, but she has hypochondriac tendencies.
Hypocondriac
Hypochondriac
The hypochondriac spent most of his income on medicines.
Right Hypochondriac