Geraldo believes he has prostate cancer, but his doctors can find no physical evidence to diagnose him with cancer. geraldo is most likely to be diagnosed with a (n)

The answer is somatoform disorder.

Somatoform disorder, also known as somatic symptom disorder is a mental ilness.

People with this disorder experience real symptoms like pain but it may not have a physical explanation.

Doctors need to rule out other possibilities, by performing many tests, in order to diagnose as somatic symptom disorder.