Myofascial pain syndrome is a musculoskeletal disorder that involves sensory, motor, and autonomic symptoms, which are caused by active muscle trigger points. Some sensory disturbances that are usually manifested are hyperalgesia, dysesthesia and referred pain.
Treatment for myofascial pain is carried out after the clinical location, through history and physical examination of the affected muscle. Botulinum toxin injection is used in the painful points of the superficial musculature or in the thickness of the muscle in the deep musculature. This toxin has managed to demonstrate its effectiveness by means of reversible blocking of the muscle fibre, which prevents the release of acetylcholine from the nerve terminals of the motor plate. Recently, other mechanisms of action of botulinum toxin have been discovered, such as blocking the release of other neuropeptides from nociceptive synapses, which seems to contribute to its analgesic action.
Botulinum toxin, better known as botox, is the toxin that produces botulism. It is currently quite well known for its use in aesthetic medicine, as injected it works to eliminate or reduce expression lines. However, it is also used in medicine to relieve certain pains and its effectiveness has been proven.
Some facts you need to know about Botox injections for myofascial pain are the following:
- Known for its ability to smooth wrinkles, injections of Botox (a brand name drug that contains botulinum toxin) may also reduce muscle pain.
- The medication works by blocking nerve impulses to the muscles in the injected area.
- As a result, the muscles relax and spasms decrease, reducing pain and increasing range of motion. In addition, Botox has been proven more effective in treating refractory migraines than conventional treatments.