Can anxiety make u have symptoms of a disease?

Anxiety: Anxiety symptoms can mimic many illnesses, such as heart or lung or intestines/stomach or neurological, as well as can intensify symptoms of underlying illnesses such as gastrointestinal or neurological. Thorough workup can clarify the illness.

Yes: Yes, anxiety can express as symptoms in nearly any organ system -- especially neurological, gi, pulmonary, and cardiac. Many people with panic attacks, for instance, fear they're having a heart attack and go to emergency rooms because of this.