Needle bath is a term used to describe a type of hydrotherapy which involves having fine jets of water massage the skin. However, there are a few synonyms for this term, which are equally applicable in different circumstances. One alternative term could be "Scottish shower", which describes a similar bathing technique that involves alternatively spraying hot and cold water on the body. Another synonym could be "jet shower", as this also denotes the use of high-pressure water jets to stimulate blood flow and promote relaxation. Finally, the term "spinal shower" could also be used, as this highlights the benefits of the therapy on the spine and nervous system.