Like most mental illnesses, PTSD does not show up on X-rays, CT scans, or blood tests. There is no simple test for PTSD. An experienced professional can diagnose it in a patient using information from his/her history, interviews, and examinations.
Can someone have it and hide it? Maybe, if she/he lies to the doctor. That just delays getting treatment, and it can get worse during that time and cause the person much more distress and misery.
Can someone have it and hide it? Maybe, if she/he lies to the doctor. That just delays getting treatment, and it can get worse during that time and cause the person much more distress and misery.