Facial Pain: Trigeminal Neuralgia, TMJ & Nerve Pain

Facial pain has many possible sources — bone, muscle, and nerve can all be involved. Dental problems are by far the most common cause and belong with your dentist. Beyond those, pain specialists treat a set of distinctive facial-nerve and jaw conditions, several of which are frequently misdiagnosed for years before the right label is found. Here are the main ones.

Trigeminal neuralgia (tic douloureux)

The hallmark is sudden, severe, stabbing or electric-shock pain on one side of the face, coming in brief bursts. What makes it distinctive is the trigger: ordinary light contact — brushing the teeth, shaving, applying makeup, washing the face, even a breeze — can set off an attack. Almost all patients are over 30. A small percentage (about 3%) of people with trigeminal neuralgia have underlying multiple sclerosis, so a new diagnosis warrants a look for it, particularly in younger patients.

First-line treatment is medication, not surgery — anticonvulsant-class drugs (carbamazepine and oxcarbazepine are the mainstays, with others as alternatives) that calm the abnormal nerve firing, sometimes with baclofen. Numbing the trigger area can make eating and tooth-brushing tolerable during flares. When medications fail, several effective procedures exist, including microvascular decompression (surgically relieving a blood vessel pressing on the nerve) and radiofrequency and other targeted rhizotomy techniques.

Other facial nerve pains

Glossopharyngeal neuralgia is similar in character but felt as electric pain in the ear and throat, often triggered by swallowing or cold drinks. Atypical facial pain is a deep, aching pain without a sharp location, more common in middle-aged women, and requires a careful workup to exclude other causes. Facial pain of the complex regional pain type can rarely follow dental surgery or facial trauma, producing intense burning pain where even light touch hurts.

Shingles of the face — treat early

When shingles (herpes zoster) strikes the face — which happens in up to a fifth of cases — it commonly involves the skin around one eye, making it both painful and potentially threatening to vision. The reactivated chicken pox virus damages the nerve it was living in (usually the trigeminal nerve in facial cases), and pain persisting beyond 4–6 weeks after the rash becomes postherpetic neuralgia, which can be severe and long-lasting.

The message here cannot be overstated: treat facial shingles as early as possible. Starting antiviral treatment early — ideally within the first days, and interventions within the first couple of months — dramatically reduces the chance of lasting pain, because early treatment limits the nerve destruction that drives postherpetic neuralgia. Antiviral drugs, nerve blocks, topical treatments, and certain antidepressants all work far better started early than late. Note that the shingles vaccine now prevents most of this in the first place.

TMJ (temporomandibular joint) disorders

TMJ problems are great imitators — they can present as headache, pain around the eye, jaw pain, ear pain, neck pain, and even dizziness or ringing in the ears. The pain can originate inside the joint (from wear, inflammation, or a displaced cushioning disc that makes the jaw click, pop, or catch) or outside it, from the chewing muscles.

A common mechanism ties stress and bite together: if the teeth don't meet properly when the mouth closes, the chewing muscles never fully relax, and chronic tension leads to spasm and pain — often worse as the day goes on. Inside the joint, a displaced articular disc can cause clicking and locking, and over time degenerative or rheumatoid arthritis can develop; an MRI usually identifies these structural problems. Treatment ranges from bite splints, stress and muscle management, and physical therapy to dental correction and, less often, procedures on the joint itself, and is frequently shared among dentists, oral surgeons, and pain specialists.

The bottom line

Facial pain is a puzzle with many pieces, but a careful history, a good exam, and — where appropriate — targeted injections or imaging can usually get right to the source. If facial pain has gone undiagnosed or untreated, call Newport Pain Management at (949) 759-8400.

This article is for general education and is not a substitute for individual medical advice. Facial shingles, especially near the eye, should be evaluated urgently.