1.
slipped disc; strained back; acute lower back pain
sudden severe lower back pain, often caused by lifting something heavy or making an awkward movement
Etymology
The word ぎっくり is onomatopoeic, representing the sudden shock or snap felt when the back gives out.
Medical term
急性腰痛症 (acute lower back pain) is the formal medical term.
Alternative name
Also called 「魔女の一撃」 (witch's strike) in German-influenced medical terminology, similar to the German term "Hexenschuss."
Prevention
Related Words
Related:
寝違え (stiff neck; crick in the neck)