Emotional distress describes psychological suffering (anxiety, humiliation, anguish or upset) claimed as harm or as a head of damages. It is not a defined legal term; courts in England & Wales, Scotland, Northern Ireland and Ireland commonly refer to psychiatric injury, nervous shock, distress or injury to feelings.In negligence, compensation usually requires a recognised psychiatric illness; mere distress, grief or worry is insufficient. Control tests apply (primary/secondary victim rules in England & Wales and Northern Ireland; analogous tests in Scotland; in Ireland, the Kelly v Hennessey criteria).Distress without clinical illness can be recoverable where specific regimes allow it, including:- Harassment (Protection from Harassment Act 1997 in England & Wales and Scotland; Protection from Harassment (Northern Ireland) Order 1997);- Data protection (UK GDPR/Data Protection Act 2018; EU GDPR in Ireland) for non-material damage;- Discrimination and whistleblowing detriment (Equality Act 2010 and NI/Irish equivalents) via injury to feelings;- Defamation/misuse of private information; and- Contract where the object is pleasure or peace of mind.Practically, plead the correct head of loss and evidence: medical diagnosis for psychiatric injury; factual impact for injury to feelings. Usage is broadly consistent across the jurisdictions, subject to the noted tests.