Transient pain, random pain, spontaneous pain, non-specific pain, etc. – these are terms which can be used to mean the same thing.
Transient pain is the feeling of ache in any part of the body which lasts for a short time, which may be as short as seconds or one day, which comes and goes away spontaneously and which does not indicate a specific disease entity.
Random pain is the feeling of ache in any part of the body (random location) which occurs anytime (random time) and which does not indicate a specific disease entity.
Spontaneous pain feeling of ache in any part of the body which occurs any time without specific trigger and which does not indicate a specific disease entity.
Non-specific pain is feeling of ache in any part of the body which does not indicate a specific disease entity and which comes and goes away spontaneously.
To simplify things and to use a term which will encompass the whole gamut of concepts and which is easy to understand, I recommend use of “transient non-specific pain.” This term covers the concept of time (transient) and random in occurrence and spontaneous resolution which does not indicate a specific disease entity (non-specific).
The exact mechanism or cause for this transient non-specific pain is unknown. It may be due to multiple or single causes – hormonal, chemical, physical or temperature changes.
Documents showing existence of non-specific pain:
Non-specific abdominal pain – surgeons have internationally described the entity of non-specific abdominal pain (NSAP).3 This is defined as ‘pain for which no immediate cause can be found (during the acute admission) and specifically does not require surgical intervention’. NSAP may be self-limiting and accounts for 13–40% of all surgical admissions.4
Non-specific neck pain can be defined as simple (non-specific) neck pain without specific underlying disease causing the pain.
Nonspecific activity-related arm pain is characterized by an absence of objective physical findings and symptoms that do not correspond with objective pathophysiology