Ríastrad is a term from the Irish language that refers to a state of intense emotional or physical distress, often associated with a warrior's battle frenzy. It is characterized by a loss of control, where the individual becomes consumed by rage or grief, leading to extraordinary feats of strength or resilience. This concept is often found in ancient Irish literature and mythology, particularly in tales of legendary heroes. In the context of Celtic culture, ríastrad is not just a momentary lapse but can signify a deeper connection to the spiritual and emotional struggles faced by individuals. It highlights the complexities of human experience, where moments of vulnerability can lead to profound transformation or insight, reflecting the duality of strength and fragility in the face of adversity.