Many factors can influence how severe or mild the Healing Crisis is. Generally people, can experience the following after a Reflexology session: fatigue, tingling, itching and the body's temperature will often go down. Some people will often urinate or have a bowel movement, this is the body ridding itself of the toxins, which have been released during the session.
People who have a lot of toxins and impurities in their systems will have a more severe 'Healing Crisis', symptoms can include headaches, diarrhoea, coldness, nausea and sinus congestion. These symptoms are a very good sign that the Reflexology is working. Healing crises normally pass within 24 hours. As the body has released a large amount of toxins and impurities, a severe Healing Crisis is unlikely to reoccur at subsequent sessions. Those who lead very stressful lives are likely to encounter this kind of healing crisis.
Reference : The Reflexology Handbook by Laura Normal with Thomas Cowan