What Causes Trigeminal Neuralgia Pain?
Trigeminal neuralgia usually occurs when the trigeminal nerve becomes irritated or compressed. The trigeminal nerve transmits sensory information from the face to the brain. When the nerve is disturbed, normal sensations such as touch may trigger severe pain signals. It is often suggested that nearby blood vessels, such as arteries, may come into contact with the trigeminal nerve and trigger pain. However, medical research shows that in many cases of trigeminal neuralgia, no clear mechanical cause can be identified. Possible causes include:
- Nerve sensitivity syndrome : Your nerves become overly sensitive, so even mild touches or movements can trigger pain.
- Close proximity of a blood vessel: A blood vessel pressing near a nerve can irritate it, causing sharp, sudden bursts of pain.
- Facial vascular deformity: Abnormal blood vessel shapes in the face can press on nerves and trigger discomfort.
- Brain tumour: Rarely, a tumour can press on nerves in the face, leading to persistent or severe pain.
- Scarring and fibrosis: Past injuries or surgeries can cause scar tissue that presses on nerves, causing pain.
- Infection: Infections in facial nerves or surrounding areas can inflame the nerves, making them more sensitive and painful.
What Are the Symptoms of Trigeminal Neuralgia?
Symptoms of trigeminal neuralgia typically affect one side of the face and can range from intermittent attacks to persistent discomfort.
- Sharp Pain and Headaches: The pain is felt around the face, radiating into the jawbone, cheekbone, or eye socket. It can be sharp, like an electric shock, making it impossible to move the jaw or touch the area. The pain is also described as pulsating and episodic, or as a chronic gnawing discomfort.
- Ocular involvement: Involuntary tearing and a feeling of eye congestion.
- Numbness or Dull Ache: Occasionally, the pain reduces into numbness or a dull ache, which may abate for a few months before returning.
Common triggers
Daily activities may trigger trigeminal neuralgia attacks. Common triggers include:
- Washing the face
- Brushing teeth
- Talking or smiling
- Eating or chewing
- Exposure to a light breeze
- Because these triggers can occur frequently, patients may struggle with normal daily activities such as eating or drinking.
What Are the Treatment Options for Trigeminal Neuralgia in Singapore?
Conservative Treatments
If your facial nerve pain is mild or in the early stages, you will benefit from conservative treatments, including:
- Anti-Convulsant Medications: Our doctors may prescribe medications to reduce the pain and relieve trigeminal neuralgia.
- Anti-Depressants: Antidepressants can help manage the impact of pain associated with the condition and have been shown to be effective in many patients.
Minimally Invasive Procedures
If your trigeminal nerve discomfort has been persistent or more severe, minimally invasive treatments can address the real source without the need for open surgery. At Singapore Paincare, we offer precise procedures designed to relieve pain at its origin.
Surgical Treatment
Generally, surgery may be recommended if your pain is long-lasting and does not improve with other treatments.
- Microvascular Decompression (MVD): This is a major operation performed by neurosurgery, involving moving a compressed artery away from the compressed nerve root. At present, MVD is considered the most effective treatment for trigeminal neuralgia, but it is an invasive surgery with potential for serious complications such as facial paralysis, hearing loss and stroke.
How to Prevent Trigeminal Neuralgia?
Trigeminal neuralgia cannot always be prevented because it often results from nerve sensitivity or vascular compression. However, patients may reduce the frequency of pain attacks by avoiding activities that trigger symptoms.
- Common precautions include:
- Avoiding extreme facial stimulation such as very cold air
- Eating softer foods during painful periods
- Practising gentle oral hygiene techniques
- Managing stress that may worsen nerve sensitivity
Frequently Asked Questions
A Message about Trigeminal Neuralgia from Our Pain Specialist
Facial pain from trigeminal neuralgia can be overwhelming. Although the condition is not life-threatening, the pain can be so intense that it disrupts daily life. Often described as the "mother of all pain," attacks can reach extreme levels of discomfort, sometimes scoring 10 out of 10. Because the pain may feel like a severe toothache, many people first visit a dentist and may even remove healthy teeth before discovering that the true cause lies in the facial nerve.
In reality, trigeminal neuralgia is caused by hypersensitivity of the trigeminal nerve — the fifth cranial nerve that carries sensation from the face. Since this is a nerve-related condition rather than inflammation or injury, common painkillers often provide little relief. Instead, the pain usually responds better to medications that stabilise irritated nerves.
For some patients, medication alone may not be enough. Around 20% of people benefit from laser-guided injection treatments that help desensitise the affected nerve and stop the pain attacks. This minimally invasive procedure is typically performed as a day surgery and can provide significant relief.
While trigeminal neuralgia may remain a long-term condition, many people are able to live comfortably with the right treatment approach. Even after successful laser injection treatment, there is about a 25% chance the pain may return over time as the nerve becomes sensitive again. With ongoing care and the right management plan, however, patients can continue to maintain good comfort and quality of life.
At Singapore Paincare, our Painostic® method goes beyond treating symptoms. We identify the real source of discomfort and build an individualised, minimally invasive plan—so you can move comfortably and confidently again.
