\nIntra-pelvic Muscle Pain (pain in the pelvic side wall muscles - obturator internus, piriformis, coccygeus) (1)
\nLevator Ani Syndrome (the term may refer to the same syndrome as ´pelvic floor muscle pain syndrome´/’tension myalgia of the PFM’) as pain with sitting and pain with defecation. (1)
\nMyalgia: muscle pain. Pelvic floor myalgia (a symptom) may be present with or without a change in PFM tone (a sign). (2)
The International Association for the Study of Pain (IASP) (3)
\nPelvic floor muscle pain syndrome - the occurrence of persistent or recurrent, episodic, pelvic floor pain.
\nMuscle tension pain - as a sustained muscle tension
Unfortunately current ICS terminology is not clear on whether these terms are being used as a symptoms (patient complaint of pain in the muscle), sign (reproduction of patient's pain by palpating a muscle) or diagnosis (symptoms and related signs).\n
Muscle pain is determined by palpating the muscle and asking the patient for sensations felt. Any muscle can generate pain if enough pressure is applied. Light pain over a muscle could be pain in the skin or fascia. Depth of palpation is not specified.\n
Tension myalgia implies the mechanism is related to increased muscle activity. This is often the case but not always - trigger points are electrically silent but very painful and can contribute to pelvic floor muscle pain.\n
Levator ani syndrome implies the dysfunction is only in the levator ani muscle group. This is also very common but not always the case.\n
There are currently several terms in the standard documents which essentially mean the same:
\n•\tpelvic floor muscle pain (syndrome)
\n•\tpelvic floor myalgia / tension myalgia
\n•\tlevator ani syndrome
\nWhich term should authors / medical practitioner use? Is it not possible to agree on one term?