Chronic rhinitis in South Africa: update 2013.
The South African Allergic Rhinitis Working Group (SAARWG) met on 6 April 2013 to discuss and review important concepts in allergic rhinitis diagnosis and management. The theme of that meeting, and this update, is to remind clinicians that all patients with rhinitis may not have allergic rhinitis (AR) specifically. The reason is twofold: (i) patients with chronic rhinitis (CR) may have one of a number of conditions that are more significant and may herald more sinister diagnoses, and (ii) many forms of chronic rhinitis may not respond as well to standard allergic rhinitis therapy. This review will focus specifically on the differential diagnosis of AR and the management of these alternative conditions.
The term 'rhinitis' implies inflammation of the lining of the nose. The characteristic symptoms are a blocked nose, anterior and posterior rhinorrhea, sneezing and itching.  Most patients with AR have an IgE or type I allergic basis,  and the Allergic Rhinitis and its Impact on Asthma (ARIA) Working Group has classified allergic rhinitis into 4 groups based on symptom duration and symptom severity (Fig. 1).  This classification has become important for South Africa, because where grass pollen is a major allergen (such as across the Highveld) the disease is usually persistent over several months and usually moderate to severe in nature.  In contrast, chronic non-allergic rhinitis, by definition, is a condition where ongoing rhinitic symptoms are present for many months (as for persistent AR)  but where there is no IgE basis. A long list of conditions may present as CR (Table 1).
3. Prevalence of CR
South Africa was fortunate enough to be represented in the International Study of Asthma and Allergies in Childhood (ISAAC). Two centres (Cape Town and Polokwane) participated in this study of the epidemiology of allergic rhinitis. In Phase I of the ISAAC Study, conducted in 1995, questioning of 13 - 14-year-old subjects reported that the prevalence of AR was 30.4% in Cape Town.  By Phase II of the study in 2003, the prevalence had gone up to 38.5%.'61 In addition, that study revealed that AR's impact on quality of life was becoming more significant.  However, the major problem with these data is that although the subjects' condition was labelled as AR, no testing for allergy was performed. This raises a concern about the above epidemiological definition of AR and its prevalence.
It is clear that when subjects are questioned on the presence of nasal symptoms, a significantly higher rate of symptoms is reported than for true AR. For example, in one study, although 48% of subjects reported chronic nasal symptoms, only 14.9% had true AR with a positive skin -prick test (SPT).  This study emphasises that the term AR should not be used unless there is either a positive allergy test (either SPT or ImmunoCAP) or a clear history of symptoms triggered by specific allergens, possibly with a seasonal variation. If such evidence of allergy is not present, then the condition should be labelled as CR and the conditions listed in Table 1 should always be considered.
Another important consideration in defining AR is that a positive allergy test does not always confirm AR in isolation. Specific IgE may be a pointer to AR but specific symptoms need to be present before the diagnosis is made.  Laboratory tests to confirm the diagnosis of AR should be selected based on careful history-taking, rather than applying a large panel of allergy tests.
In children the allergic component of CR may be more frequent than in adults.
4. Climate change, urban air pollution and CR
We live in a dynamic environment, with rising average temperature and increasing anthropogenic greenhouse gases, which may increase the generation of pollen-producing plant species. [9,10] Increased levels of pollutants such as carbon dioxide, ozone and nitrogen dioxide enhance the allergic response,  and pollutants may induce their own form of irritant rhinitis. Changes in vegetation biomes, as a result of climate change, are likely to cause changes in outdoor pollen and fungal allergens. Changes in the climate are expected to alter the presentation, seasonality and epidemiology of allergic rhinitis and other allergic respiratory diseases in future.
5. Impact of rhinitis on South Africans
In light of the statement above that most epidemiological studies of AR are in fact studies of CR, there are valuable lessons to be learned from studies of the impact of rhinitis on quality of life.  Many South African studies have suggested that CR impacts significantly on patient quality of life and the major effect is impaired sleep. [13-15] Trivialising CR as a minor, non-life-threatening illness promotes the idea that CR does not affect patients significantly. However, CR may result in significant co-morbidity, presenteeism and absenteeism from work and school.
6. Local allergic rhinitis
Recently, local allergic rhinitis (LAR) has been recognised as a condition.  In LAR, patients report typical allergy-induced rhinitic symptoms but all IgE-based allergy testing is negative. IgE is produced locally in response to allergens in the nose, but not systemically.  Only provocation testing diagnoses the problem; however, these tests are not widely available and only a limited number of allergens can be tested. However, patients with this condition do respond to the usual treatments for AR (including antihistamines and intranasal steroids).
7. Treating CR
Antibiotics must not be used for a 'cold'.  Upper respiratory tract infections are usually viral, and antibiotic use in this condition only leads to the evolution of resistant flora.
Previous SAARWG guidelines have discussed the therapeutic modalities for AR in depth. [18,19] Topical use of corticosteroids remains the drug of choice, although antihistamines appear to be more acceptable for the treatment of young children and are effective. Allergen immunotherapy is an important therapeutic option.
Aspirin-induced respiratory disease is a condition where sensitivity to non-steroidal anti-inflammatory drugs leads to asthma, nasal symptoms and polyposis. Therapy involves specific aspirin desensitisation and avoidance of Cox-I inhibitors. Montelukast is a useful therapeutic option for some patients. 
Therapy of non-allergic, so-called 'vasomotor' rhinitis is difficult. There is no standard therapy which always works. Some patients respond to intranasal corticosteroids,  and other therapies that may work in selected patients are topical anticholinergics  and occasional use of topical decongestants. However, the benefit of topical decongestants often leads to the overuse of this form of therapy, which may lead to rebound or rhinitis medicamentosa.
8. Surgical intervention for CR
A number of anatomical abnormalities of the nose and sinuses may cause rhinitis symptoms and many may co-exist with AR. Thus at some stage in the medical management and investigation of CR, where therapy is ineffective, the patient should be evaluated for anatomical abnormalities, including septal deviation, nasal polyposis and tumours of the nose and sinuses. Referral to a specialist and radiological imaging may be necessary.
Every patient who experiences chronic snoring must be investigated for CR and have the condition managed adequately. If the snoring continues, they should be evaluated and managed for adenoidal hypertrophy. This is particularly important in children, who are at risk of developing right-sided heart failure and cor pulmonale.
9. New international guidelines on CR/AR
Doctors in South Africa have regularly updated AR guidelines for local application. [1,18,19] The previous revision of the ARIA guideline has suggested 10 areas that require global applicability of ARIA and have unmet needs.  Recent South African guidelines have addressed some of these issues. There are, however, some areas, especially for CR, that still require attention (Table 2).
10. Sport and CR
Competitive sportsmen may experience significant rhinitic symptoms and require that their symptoms be managed.  A number of reasons for this phenomenon have been proposed.  Care must be taken with medication because of potential adverse effects and/or 'anti-doping' codes. Permitted and banned medications are listed in Table 3. 
11. Doctor and patient education for CR
Patients with CR must be educated about their condition and therapy. Clinical studies indicate that only 31% of patients are regularly shown how to use nasal sprays.  There is good evidence from international and local studies that patients are frustrated by CR - education helps to allay fears and concerns, and improves medication compliance. [26,27]
Conflict of interest. Aspen HealthCare provided an unrestricted grant for the meeting of the South African Allergic Rhinitis Working Group (SAARWG).
[1.] Luyt DK, Green RJ, Alright P, et al. Management of allergic rhinitis in South Africa. S Afr Med J 1996;56(10):1315-1328.
[2.] Scadding GK, Durham SR, Mirakian R, et al. BSACI guidelines for the management of allergic and nonallergic rhinitis. Clin Exp Allergy 2008;38:19-42. 'http://dx.doLorg/10.1111/j.1365-2222.2007.02888.x;
[3.] Bousquet J, Khaltaev N, Cruz AA, et al. ARIA (Allergic Rhinitis and its impact on Asthma (ARIA) 2008 Update. Allergy 2008;63(Suppl 86):8-160. 'http://dx.doi.org/10.1111/j.1398-9995.2007.01620.x1
[4.] Mercer MJ, van der Linde GP, Joubert G. Rhinitis (allergic and nonallergic) in an atopic pediatric referral population in the grasslands of inland South Africa. Ann Allergy Asthma Immunol 2002;89(5):503-12. 'http://dx.doi.org/10.1016/S1081-1206(10)620891
[5.] Strachan D, Sibbald B, Weiland S, et al. Worldwide variations in prevalence of symptoms of allergic rhinoconjunctivitis in children: The International Study of Asthma and Allergies in Childhood (ISAAC). Pediatr Allergy Immunol 1997;8(4):161-176.
[6.] Zar HJ, Ehrlich RI, Workman L, Weinberg EG. The changing prevalence of asthma, allergic rhinitis and atopic eczema in African adolescents from 1995 to 2002. Pediatr Allergy Immunol 2007;18(7):560-565. 'http://dx.doi.org/10.1111/j.1399-3038.2007.00554.x1
[7.] Zhang YM, Zhang J, Liu SL, et al. Prevalence and associated risk factors of allergic rhinitis in preschool children in Beijing. Laryngoscope 2013;123(1):28-35. 'http://dx.doi.org/10.1002/lary.23573.1
[8.] Blomme K, Tomassen P, Lapeere H, et al. Prevalence of allergic sensitization versus allergic rhinitis symptoms in an unselected population. Int Arch Allergy Immunol 2012;160(2):200-207. 'http:// dx.doi.org/10.1159/0003398531
[9.] Blando J, Bielory L, Nguyen V, Diaz RI, Jeng HA. Anthropogenic climate change and allergic disease. Atmosphere 2012;3(1):200-212. 'http://dx.doi.org/10.3390/atmos30102001
[10.] Berman D. Climate change and aeroallergens in South Africa. Curr Allergy Clin Immunol 2011;24(2):65-71.
[11.] Lin G, Zacharek M. Climate change and its impact on allergic rhinitis and other allergic respiratory diseases. Curr Opin Otolaryngol Head Neck Surg 2012;20(3):188-193. 'http://dx.doi.org/10.1097/ MOO.0b013e3283524b141
[12.] Green RJ, Davis G, Price D. Concerns of patients with allergic rhinitis: The Allergic Rhinitis Care Programme in South Africa. Prim Care Respir J 2007;16(5):299-303. 'http://dx.doi.org/10.3132/ pcrj.2007.000621
[13.] Potter PC, Van Niekerk CH, Schoeman HS. Effects of triamcinolone on quality of life in patients with persistent allergic rhinitis. Ann Allergy Asthma Immunol 2003;91(4):368-374. 'http://dx.doi. org/10.1016/S1081-1206(10)61684-51
[14.] Potter PC, Paediatric Levocetirizine Study Group. Efficacy and safety of levocetirizine on symptoms and health-related quality of life of children with perennial allergic rhinitis: A double-blind, placebocontrolled randomized clinical trial. Ann Allergy Asthma Immunol 2005;95(2):175-180. 'http:// dx.doi.org/10.1016/S1081-1206(10)61684-51
[15.] Green RJ, Luyt DK. Clinical presentation of chronic non-infectious rhinitis in children. S Afr Med J 1997;87(8):987-991.
[16.] Rondon C, Campo P, Togias A, et al. Local allergic rhinitis: Concept, pathophysiology, and management. J Allergy Clin Immunol 2012;129(6):1460-1467. 'http://dx.doi.org/10.1016/j.jaci.2012.02.0321
[17.] Brink A, Cotton M, Feldman C, et al. Updated guidelines for the management of upper respiratory tract infections in South Africa: 2008. S Afr J Fam Prac 2009;51:105-114.
[18.] Potter PC, Carte G, Davis G, et al. Clinical management of allergic rhinitis - the Allergy Society of South Africa Consensus update. S Afr Med J 2006;96(12 Pt 2):1269-1272.
[19.] Green RJ, Hockman M, Friedman R, et al. Allergic rhinitis in South Africa: 2012 guidelines. S Afr Med J 2012;102(8):693-696. 'http://dx.doi.org/10.7196/samj.58101
[20.] Scow DT, Luttermoser GK, Dickerson KS. Leukotriene inhibitors in the treatment of allergy and asthma. Am Fam Physician 2007;75(1):65-70.
[21.] Baccioglu Kavut A, Kalpaklioglu F. Efficacy and safety of once daily triamcinolone acetonide aqueous nasal spray in adults with non-allergic and allergic rhinitis. Allergol Immunopathol 2012 (Epub ahead of print). 'http://dx.doi.org/10.1016/j.aller.2012.05.0061.
[22.] Druce HM, Spector SL, Fireman P, et al. Double-blind study of intranasal ipratropium bromide in nonallergic perennial rhinitis. Ann Allergy 1992;69(1):53-60.
[23.] Bousquet J, Schunemann HJ, Samolinski B, et al. Allergic Rhinitis and Its impact on Asthma (ARIA): Achievements in 10 years and future needs. J Allergy Clin Immunol 2012;130(5):1049-1062. 'http:// dx.doi.org/10.1016/j.jaci.2012.07.0531
[24.] Bonini S, Bonini M, Bousqet J, et al. Rhinitis and asthma in athletes: An ARIA document in collaboration with GA2LEN. Allergy 2006;61(6):681-992. 'http://dx.doi.org/10.1111/j.13989995.2006.01080.x1
[25.] The World Anti-doping Agency (WADA). The 2013 prohibited list effective January 1, 2013. Adapted form ARIA guidelines 2006: Athletes. Lausanne, Switzerland: WADA; 2012. http://www.wada-ama. org (accessed 5 May 2013)
[26.] Blaiss MS, Meltzer EO, Derebery MJ, Boyle JM. Patient and healthcare-provider perspectives on the burden of allergic rhinitis. Allergy Asthma Proc 2007;28 Suppl 1:S4-10. 'http://dx.doi.org/10.2500/ aap.2007.28.29911
[27.] Gani F, Pozzi E, Crivellaro MA, et al. The role of patient training in the management of seasonal rhinitis and asthma: Clinical implications. Allergy 2001;56(1):65-68.
R J Green, (1) PhD, Dip Allergol (SA); M Hockman, (2) FCS (SA) (ORL); R Friedman, 2,3) FCS (SA) (ORL); M Davis, (4)FC Paed (SA);
M McDonald, (3) MB ChB, Dip Allergol (SA); R Seedat, (5) FCS (SA) (ORL); C Els, 6) FC Paed (SA), Dip Allergol (SA), Cert Pulm (Paed) (SA);
M Levin, (7) PhD, Dip Allergol (SA); P Potter, (8) MD; C Feldman , (9) PhD, DSc
(1) Department of Paediatrics and Child Health, University of Pretoria, South Africa
(2) Department of ENT Surgery, Netcare Linksfield Clinic, Johannesburg, South Africa
(3) Mediclinic Sandton, Johannesburg, South Africa
(4) Department of Paediatrics, Netcare Linksfield Clinic, Johannesburg, South Africa
(5) Department of Otorhinolaryngology, University of the Free State, South Africa
(6) Department of Paediatric Pulmonology and Allergy, Linksfield Clinic, Johannesburg, South Africa
(7) Department of Paediatrics and Adolescent Health, University of Cape Town, South Africa
(8) Department of Medicine, University of Cape Town, South Africa
(9) Division of Pulmonology, Department of Internal Medicine, University of the Witwatersrand, Johannesburg, South Africa
On behalf of the South African Allergic Rhinitis Working Group. S Bouwer, G P Tunguy-Desmarais, A McCulloch, H Lewis, I Hunt, E Vardas, L Wolff, F Mokgoadi, M Gill, P Jeena, F Jooma, G J Joyce, T Moodley.
Endorsed by the Allergy Society of South Africa.
Corresponding author: R J Green (firstname.lastname@example.org)
Table 1. Causes of chronic rhinitis (CR) * Allergic rhinitis (intermittent or persistent) * Local allergic rhinitis * Non-allergic rhinitis: * Acute exacerbation of a low-grade chronic rhinitic condition (e.g. By a common cold) * Drug-induced: rhinitis medicamentosa caused by topical decongestants or other drugs (beta-blockers, ACE inhibitors, reserpine, calcium channel blockers, methyldopa, alphareceptor antagonists, phosphodiesterase-5 inhibitors, aspirin, NSAIDS, oral contraceptives) * Vasomotor rhinitis (non-allergic rhinopathy) * Occupational rhinitis * Chronic infective rhinosinusitis * Gustatory rhinitis * Pregnancy-associated rhinitis * Primary ciliary dyskinesia * Primary or secondary immune deficiency * Cystic fibrosis * Senile rhinitis Table 2. Recommendations for action in treating chronic rhinitis (CR) * Consider CR as a multifactorial condition of which AR is only one cause * Long-term studies of change in prevalence of CR in relation to climate change are needed * The AR Essential Drug List (EDL) for South Africa should be updated to reflect safe and effective therapy - sedating antihistamine therapy must not be recommended * Medical aid organisations must be encouraged to allow therapy for CR to be paid for through chronic benefits * Medication should be tailored to individual patients * Patient education for CR is very important Table 3. World Anti-Doping Agency (WADA): Chronic rhinitis (CR) drugs that are permitted and not permitted in sport Treatment WADA rules Antihistamines Permitted (WADA 2006) Antileukotrienes Permitted (WADA 2006) Oral steroids Prohibited Topical steroids Require an abbreviated therapeutic use exemption (WADA 2006) Oral beta-2 agonists Prohibited Inhaled salbutamol, Require an abbreviated therapeutic formoterol or use exemption salmeterol Ephedrine Prohibited methylephedrine Pseudoephedrine Prohibited Immunotherapy Permitted Treatment Notes Antihistamines Second-generation antihistamines should be preferred, to avoid cardiotoxic effects and somnolence. (Nothing mentioned: WADA 2013) Antileukotrienes Nothing mentioned: WADA 2013 Oral steroids All glucocorticoids prohibited Topical steroids Nothing mentioned: WADA 2013 Oral beta-2 agonists Inhaled salbutamol, The presence in urine of salbutamol in excess formoterol or of 1 000 ng/ml or formoterol in excess of 40 salmeterol ng/ml is presumed not to be an intended therapeutic use of the substance. It will be considered an adverse analytical finding unless the athlete proves, through a controlled pharmacokinetic study, that the abnormal result was the consequence of the use of the therapeutic inhaled dose up to the maximum indicated above Ephedrine Each of ephedrine and methylephedrine is methylephedrine prohibited when its concentration in urine is greater than 10 [micro]g/ml Pseudoephedrine Pseudoephedrine is prohibited when its concentration in urine is greater than 150 [micro]g/ml Immunotherapy Subcutaneous immunotherapy injections should not be performed before or after physical exercise
|Printer friendly Cite/link Email Feedback|
|Author:||Green, R.J.; Hockman, M.; Friedman, R.; Davis, M.; McDonald, M.; Seedat, R.; Els, C.; Levin, M.; Pot|
|Publication:||South African Medical Journal|
|Article Type:||Disease/Disorder overview|
|Date:||Jun 1, 2013|
|Previous Article:||Acute kidney injury risk factor recognition in three teaching hospitals in Ethiopia.|
|Next Article:||Spinal cord stimulation for the management of pain: recommendations for best clinical practice.|