Early research has suggested that enhancing the body's natural cortisol response to a stressful event may be a safe and effective way of moderating the process of memory consolidation and promoting adaptive, non-pathological memory encoding. In particular, the administration of hydrocortisone, a safe and widely used drug that mimics the body's own cortisol hormone, appears to reduce the risk of developing PTSD in patients who have sustained a traumatic event. However, this research is still in relatively early stages, and requires larger trials to confirm its efficacy. In addition, the research thus far has not adequately targeted assault victims, whom Investigator feel are some of the patients most likely to benefit from such an approach.