The Utility of Radiologic Studies in the Diagnosis and Management of Rhinosinusitis

Intranasal contact points as a cause of facial pain or headache: a systematic review

BACKGROUND

There is a body of opinion in the clinical literature advocating the removal of intranasal contact points to treat facial pain.

OBJECTIVES

To review the evidence that intranasal mucosal contact points cause facial pain or headache and their removal is therapeutic.

TYPE OF REVIEW

Systematic review.

SEARCH STRATEGY

A systematic search of the available literature was performed using MEDLINE, EMBASE, Cochrane library and NHS Evidence from inception to September 2011. Terms used include facial pain and contact point (3628), rhinologic headache (6) contact point and surgery/endoscopy (38).

EVALUATION METHOD

Inclusion criteria applied. Assessment of papers were undertaken by one reviewer and checked by the second. A narrative review of each study was performed and results recorded in tables.

RESULTS

In one study, 973 consecutive patients with a provisional diagnosis of rhinosinusitis were divided into groups with (42%) and without facial pain. There was a 4% prevalence of nasal contact in both groups, which was unrelated to the presence of facial pain. In another study of 100 patient's coronal paranasal sinus CT scans, 29% had headache and 55% had a contact point but their presence was inversely related to the presence of pain.(1) In a further study, ten healthy volunteers had palpation, adrenaline, substance P and placebo applied to different areas throughout the nasal cavity and none of these stimuli caused facial pain. Nineteen studies were identified where nasal mucosal contact points had been removed surgically for the treatment of facial pain. They were small case series, not randomised and subject to selection bias, had no control group, a limited follow-up and were open to observer bias with level IV evidence. Seven studies had a statistically significant improvement in pain postoperatively compared with preoperative questionnaire results but the majority had residual facial pain.

CONCLUSION

The majority of people with contact points experience no facial pain. The presence of a contact point is not a good predictor of facial pain. The removal of a contact point rarely results in the total elimination of facial pain making the theory that a contact point is responsible unlikely. The improvement in postoperative symptoms following the removal of contact points in some patients may be explained by cognitive dissonance or neuroplasticity. A randomised, controlled and blinded trial with a followed up period of over 12 months is needed to assess the place of surgery in the removal of a contact point for the treatment of facial pain.

The sinus headache explained

The concept of a sinus headache is problematic from neurology, allergology, and rhinology perspectives. It may be considered the final neurological diagnosis of exclusion when criteria for other craniofacial pain syndromes are not met. The International Headache Society definition implicates the presence of acute sinusitis, but this requirement is often not met in practice or with a patient's perception of the term. Otorhinolaryngologists have a similar exasperation with this cephalgia but tend to attribute idiopathic, nonallergic rhinopathy as the cause. Allergists often see patients who claim to have a sinus headache but instead have perennial allergic rhinitis or nonallergic rhinitis. A fresh perspective is required to determine the characteristics, differential diagnosis, and veracity of the sinus headache. We recommend using the term with caution only if the clinical picture meets the criteria for acute sinusitis-induced headache.

Sinogenic Facial Pain: Diagnosis and Management

Most patients who present to an otorhinolaryngology clinic with facial pain and headaches believe they have sinusitis. There is an increasing awareness that neurologic causes are responsible for a large proportion of patients with headache and facial pain. If facial pain and pressure is the primary symptom, it is unlikely to be caused by sinus disease in the absence of any nasal symptoms or signs. Patients with facial pain who have no objective evidence of sinus disease are unlikely to be helped by surgery. Most patients with pain caused by sinusitis respond to medical therapy.

Therapeutic options in the management of headache attributed to rhinosinusitis

Sinus headache is a common diagnosis when patients have facial pain and pressure accompanying their headache. However, acute sinus headache is in fact rare, and the headache must accompany acute bacterial rhinosinusitis (ABRS), a diagnosis which is based both on clinical and radiological evidence. In fact, sinus headache is a misnomer. The only headache related to sinus disease, as recognised by the International Headache Society (IHS), is headache attributed to rhinosinusitis (HARS; section 11.5 of IHS criteria). Many patients who are diagnosed with sinus headache and treated with antibiotics have a primary headache, usually migraine. This is an important distinction and the treatment is very different. This review covers the most recent definitions, epidemiology, pathophysiology, diagnostics and treatment of ABRS and the resulting headache as defined by the IHS.