It is important to clarify that new, sterile needles are used for each patient. At the end of the session, they are discarded in a special red jar, called a guardian, which is then collected by a biological waste company and subsequently incinerated. Needles are not reused, nor are they shared between patients. Therefore, the risk of infection or disease transmission through needles is almost zero. With acupuncture, complications or discomfort occur very rarely (approximately one bothersome event in 200 patients). Possible discomforts are the following: transient residual pain, occasional slight bleeding, ecchymosis or bruising, drowsiness after the session, occasional worsening of symptoms, momentary needle entrapment; general reactions such as slight dizziness, momentary fainting, heavy head, which can last a few minutes.