Posttraumatic stress disorder is hypothesized to be prone to iatrogenic complications based on treatment modality. Chronic periodontitis can be associated with local predisposing factors (e.g. tooth-related or iatrogenic factors). These professionals monitor and report infectious disease findings to help limit iatrogenic and nosocomial infections. Other causes include trauma, pathology (e.g. tumours or cysts), infection or iatrogenic damage during surgery. Aggressive treatment should be avoided because of the risk of iatrogenic complications, including cardiovascular arrest. Amastia can be either iatrogenic or congenital. These small iatrogenic atrial septal defects usually disappear within six months. Other types of infection consist of mixed, iatrogenic, nosocomial, and community-acquired infection. Iatrogenic causes like endoscopic perforation may also give football sign. Critical patients who received regular doses of opioids experience Iatrogenic withdrawal as a frequent syndrome. Effectively, it causes iatrogenic nephrogenic diabetes insipidus. Other causes include trauma and iatrogenic (procedure-related) causes. Trauma, auto-immune disorders, infection and iatrogenic (medicine-related) factors can all cause bursitis. Obstetrical, vascular, iatrogenic, and even urological sources have all been described. Iatrogenic theories propose that medical interventions were responsible for HIV origins.