You can't pour from an empty container. Write what you've been carrying.

Compassion fatigue (also called secondary traumatic stress) is the emotional exhaustion that comes from sustained empathic engagement with people who are suffering. It was first described in nurses by Joinson in 1992 and later studied extensively in first responders, therapists, social workers, and palliative care professionals. It is distinct from general burnout in that it arises specifically from the emotional labour of caring — not from overwork broadly. People who are highly empathic, work in high-distress environments, or provide caregiving outside work (for family members) are most vulnerable.

Burnout is general work exhaustion arising from chronic overload, lack of recognition, or misalignment between values and environment — it can happen in any role. Compassion fatigue arises specifically from the cost of empathic engagement with suffering. A burned-out accountant and a compassion-fatigued hospice nurse both feel depleted, but the mechanisms differ. Compassion fatigue often includes intrusive symptoms — difficulty stopping yourself from thinking about the people you are caring for, hypervigilance to their distress — that burnout typically does not. The recovery strategies also differ: burnout responds to rest and workload reduction; compassion fatigue requires deliberate emotional processing and boundary-setting.

Early signs: difficulty leaving work mentally at the end of the day, dreaming about patients or clients, reduced capacity to empathise with new people (numbness starting), irritability at home that contrasts with patience at work, avoiding interactions with people who are suffering when avoidance is possible, and physical symptoms (headaches, disrupted sleep) without an obvious cause. The paradox of early compassion fatigue is that the people most vulnerable to it are often the most committed — they override the warning signals because stopping feels like abandonment.

Compassion fatigue builds partly because emotional reactions to others' suffering go unprocessed — they accumulate rather than discharge. Expressive writing creates a deliberate processing event: you externalise what you are carrying, name the specific emotions, and close the cognitive loop that keeps the situation in working memory. Research by Pennebaker shows that expressive writing about emotionally difficult experiences reduces intrusive thoughts and physiological stress markers over time. For compassion fatigue specifically, writing also helps identify where the empathic boundary has dissolved — which clients or situations are being carried home — so the boundary can be consciously re-established.