Carefully. In some cases, when a clinician expresses suspicion about an individual’s symptoms, or challenges or denies their claims, the patient may become hostile or aggressive, threatening, among other things, legal action over claims of malpractice. Practitioners are generally advised to remain nonconfrontational and unemotional in a session with an apparent malingerer, relying on scientific facts such as test results, and to avoid invasive diagnostic procedures that may do harm to the malingerer.