Working with the dying and their families can create much stress for the nurse. It is sometimes referred to as "death overload". Olson (1997) notes that caregivers of dying persons often re-examine their own belief systems and may suffer an existential crisis of faith. Health professionals grieve the loss of their clients, and when the losses come too quickly, they may not complete the grieving process before the next death. This may lead to feelings of guilt, anger, irritability, frustration, helplessness, inadequacy, sleeplessness, and depression. Problems may arise in interaction with clients, family members, and other staff. Olson (1997) further notes the consequences when staff are not dealing well with the deaths of clients (p. 207)