Different types of drugs are the reasons for the disorder to happen. The medications with the highest level of risk include all those prescribed to control blood pressure (minimize it when it quickly goes up). It is better to avoid using an angiotensin-converting enzyme (ACE) in this case as it provokes Angioedema. Moreover, health care professionals recommend keeping away from the non-steroidal anti-inflammatory class of drugs like those, you take to reduce a headache.