Period Pain
【Summary】
Severe period pain should never be ignored. Long-term pain can trigger “neurogenic sensitisation”, causing the brain to amplify pain signals and spread them to the pelvis and bowel. Seeking early treatment from a pain medicine specialist can effectively prevent chronic pain conditions.
Unbearable Period Pain? Beware of “Neurogenic Sensitisation” Leading to Chronic Pain
Period pain is a monthly nightmare for many women. While some only need a hot water bottle or a little rest for relief, others experience excruciating pain that can be accompanied by irritable bowel syndrome, bladder pain, or unexplained body aches. The key behind this could be a nervous system reaction known as “neurogenic sensitisation”.
Understanding the Two Main Types of Period Pain
In medicine, period pain is primarily divided into two categories: primary and secondary. Primary period pain is usually caused by intense uterine muscle contractions and local oxygen deprivation during menstruation. Secondary period pain is typically caused by underlying pelvic conditions, with the most common culprits being endometriosis or adenomyosis.
What is “Neurogenic Sensitisation”?
Whether it is primary or secondary period pain, if the discomfort remains poorly controlled over a long period, the nervous system can become abnormally sensitive due to constant stimulation. This phenomenon is known as “neurogenic sensitisation”.
Sensitisation can occur locally in the pelvis or even spread to the central nervous system, which includes the brain and spinal cord. When “central sensitisation” happens, the pain becomes highly stubborn. The brain acts like a faulty amplifier, continuously magnifying pain signals, whilst the body’s built-in pain relief system gradually fails, turning ordinary period cramps into severe agony. Furthermore, this makes the body more vulnerable to developing other difficult-to-treat chronic pain conditions.
Why Can Period Pain Affect the Bowel and Bladder?
A 2020 meta-analysis covering over 6,000 patients with dysmenorrhoea highlighted that chronic period pain significantly increases the risk of developing other chronic pain conditions.
Why does this happen? The nerve networks of different pelvic organs, such as the uterus, bladder, and bowel, overlap within the spinal cord. When the pain signals from the uterus are over-amplified, the brain can experience an illusion, misinterpreting normal signals from neighbouring organs as pain. This is medically known as “cross-sensitisation”. As a result, many patients with severe period pain simultaneously suffer from bladder pain, unexplained pelvic pain, irritable bowel syndrome, or widespread body aches.
Stop It Early: Do Not Let Period Pain Become Chronic
When the body has already developed central sensitisation, standard painkillers are often ineffective. If your general practitioner or gynaecologist has run out of options, it is highly recommended to seek help from a pain medicine specialist early on.
Pain medicine specialists can offer a range of targeted treatments. For medication, they may prescribe neuromodulators specifically designed to regulate the nervous system and reduce hypersensitivity. In conjunction with physiotherapy and rehabilitation, doctors can guide patients through pelvic floor relaxation exercises to relieve muscle tension caused by long-term pain. If pelvic muscle spasms are severe, targeted trigger point injections can be performed. For more stubborn cases, interventional pain treatments may be considered, such as administering a nerve block injection to the pelvic nerve plexus or employing neuromodulation to directly interrupt abnormal pain signals from the source.
Period pain is absolutely not a minor issue that you should just put up with. When period cramps are severe, receiving appropriate treatment early is essential to prevent the nervous system from enduring prolonged stress and developing into a devastating chronic pain condition.
