One-liner#

Allergic rhinitis management centers on intranasal corticosteroids as first-line therapy, second-generation antihistamines for breakthrough symptoms, allergen avoidance when feasible, and immunotherapy referral for patients with inadequate response to pharmacotherapy.

Quick nav#

• Definition and epidemiology
• Pathophysiology
• Clinical presentation
• Diagnostic workup
• Treatment
• Patient education
• Prognosis and monitoring
• Special populations
• When to refer
• Smartphrase snippets
• Related pages

Definition and epidemiology#

Diagnostic criteria#

Allergic rhinitis is an IgE-mediated inflammatory condition of the nasal mucosa characterized by:

Cardinal symptoms (≥2 required for diagnosis):

• Nasal congestion/obstruction
• Rhinorrhea (anterior or posterior)
• Sneezing
• Nasal itching

Plus evidence of allergic etiology:

• Symptoms triggered by allergen exposure
• Temporal pattern consistent with allergen (seasonal or perennial)
• Personal or family history of atopy
• Positive allergy testing (skin prick or specific IgE)

Classification by temporal pattern:

• Seasonal (intermittent): symptoms <4 days/week OR <4 consecutive weeks
• Perennial (persistent): symptoms >4 days/week AND >4 consecutive weeks

Classification by severity:

• Mild: none of the following impairments
• Moderate-severe: ≥1 of: sleep disturbance, impairment of daily activities/work/school, troublesome symptoms

Epidemiology#

Prevalence is 10-30% of adults and up to 40% of children in the US—one of the most common chronic conditions. Peak onset in childhood/adolescence; can develop at any age. Strong association with other atopic conditions: 40% have asthma, 50-70% have allergic conjunctivitis, increased eczema prevalence. Annual direct medical costs exceed $3 billion; indirect costs (lost productivity, absenteeism) are substantially higher. Undertreated allergic rhinitis worsens asthma control and quality of life.

Pathophysiology#

Mechanism (clinical understanding)#

Allergic rhinitis is a Type I (IgE-mediated) hypersensitivity reaction occurring in two phases:

Sensitization (first exposure):

• Allergen (pollen, dust mite, pet dander) contacts nasal mucosa
• Antigen-presenting cells process allergen and present to T-helper cells
• Th2 response drives B-cell production of allergen-specific IgE
• IgE binds to mast cells in nasal mucosa (patient now “sensitized”)

Early-phase response (minutes after re-exposure):

• Allergen cross-links IgE on mast cells
• Mast cell degranulation releases histamine, leukotrienes, prostaglandins
• Causes immediate symptoms: sneezing, itching, rhinorrhea, congestion
• This is what antihistamines block

Late-phase response (4-8 hours after exposure):

• Inflammatory cell recruitment (eosinophils, basophils, T-cells)
• Cytokine release perpetuates inflammation
• Causes persistent congestion and nasal hyperreactivity
• This is what intranasal corticosteroids address

Key clinical implication: Antihistamines help acute symptoms but don’t address underlying inflammation. Intranasal corticosteroids are more effective because they target the inflammatory cascade.

Common allergens:

• Seasonal: tree pollen (spring), grass pollen (late spring/summer), ragweed (fall), mold spores
• Perennial: dust mites, pet dander (cat > dog), cockroach, indoor mold

How to explain to patients#

Your nose is overreacting to things that are harmless to most people—like pollen, dust, or pet dander. When these things get into your nose, your immune system treats them like dangerous invaders and releases chemicals that cause swelling, itching, and mucus.

Think of it like a smoke alarm that goes off when you’re just cooking—your nose is sounding the alarm when there’s no real danger.

The nasal spray we use works by calming down this overreaction. It reduces the swelling inside your nose. The pills help block the chemicals that cause itching and sneezing. Using both together works better than either alone.

Clinical presentation#

Characteristic symptoms#

Nasal symptoms:

• Congestion/obstruction: often bilateral; may alternate sides; worse at night
• Rhinorrhea: typically clear and watery; posterior drip causes throat clearing
• Sneezing: often in paroxysms; triggered by allergen exposure
• Nasal itching: patients may rub nose upward (“allergic salute”)

Associated symptoms:

• Ocular: itching, tearing, redness (allergic conjunctivitis in 50-70%)
• Palatal/pharyngeal itching
• Ear fullness or popping (eustachian tube dysfunction)
• Fatigue, irritability, poor concentration (“allergic fog”)
• Headache (sinus pressure)
• Cough (post-nasal drip)

Temporal patterns:

• Seasonal: predictable timing based on pollen seasons; outdoor exposure worsens
• Perennial: year-round with possible seasonal exacerbations; indoor exposure worsens
• Occupational: symptoms at work, improve on weekends/vacations

Physical exam findings#

Nasal exam:

• Pale, boggy, bluish turbinates (classic finding)
• Clear rhinorrhea
• Swollen nasal mucosa
• May have nasal polyps (especially with aspirin-exacerbated respiratory disease)

Facial features:

• Allergic shiners: dark circles under eyes from venous congestion
• Dennie-Morgan lines: extra crease below lower eyelids
• Allergic salute: transverse nasal crease from repeated nose rubbing
• Mouth breathing, adenoid facies in children

Oropharynx:

• Cobblestoning of posterior pharynx (lymphoid hyperplasia from post-nasal drip)

Eyes:

• Conjunctival injection, chemosis
• Lid edema

Ears:

• Retracted tympanic membrane (eustachian tube dysfunction)
• Middle ear effusion

Red flags#

Symptoms suggesting alternative diagnosis or complication:

• Unilateral symptoms (mass, foreign body, septal deviation)
• Bloody or purulent discharge (infection, malignancy)
• Anosmia (nasal polyps, COVID-19)
• Facial pain/pressure >10 days (bacterial sinusitis)
• Severe headache, vision changes, periorbital swelling (orbital/intracranial complication)
• Symptoms not responding to appropriate therapy (consider alternative diagnosis)

Diagnostic workup#

Initial evaluation#

Clinical diagnosis is usually sufficient:

• Characteristic symptoms + temporal pattern + response to empiric therapy
• Allergy testing not required to initiate treatment
• Most patients can be managed empirically in primary care

When to consider allergy testing:

• Symptoms not controlled with empiric therapy
• Need to identify specific triggers for avoidance
• Considering immunotherapy
• Diagnostic uncertainty (is this really allergic?)
• Occupational rhinitis suspected

Skin prick testing (preferred):

• Gold standard; performed by allergist
• Results in 15-20 minutes
• Tests multiple allergens simultaneously
• Must hold antihistamines 3-7 days before testing
• Contraindicated: severe eczema, dermatographism, unable to stop antihistamines

Serum specific IgE (alternative):

• Order when skin testing not feasible
• No need to stop antihistamines
• Slightly less sensitive than skin testing
• More expensive; results take days
• Order panels based on clinical suspicion (regional aeroallergens, indoor allergens)

Confirmatory testing#

Nasal endoscopy (ENT performs):

• Not routine for allergic rhinitis
• Indicated for: suspected polyps, unilateral symptoms, refractory symptoms, structural abnormality

CT sinus:

• Not indicated for uncomplicated allergic rhinitis
• Consider if: suspected chronic sinusitis, nasal polyps, structural abnormality, pre-operative planning

Total serum IgE:

• Not useful for diagnosis (poor sensitivity and specificity)
• May be elevated in atopic patients but doesn’t confirm allergic rhinitis

When to refer for specialist workup#

Allergy/immunology referral for:

• Allergy testing (skin prick testing)
• Consideration for immunotherapy
• Refractory symptoms despite optimal pharmacotherapy
• Diagnostic uncertainty
• Severe or complicated allergic rhinitis

What NOT to order#

• Total IgE (not diagnostic)
• CT sinus for uncomplicated allergic rhinitis
• Nasal cytology (rarely changes management)
• Food allergy panels (food allergies rarely cause isolated rhinitis)
• Large panels of specific IgE without clinical correlation

Treatment#

Goals of therapy#

Primary goals:

1. Minimize symptoms (congestion, rhinorrhea, sneezing, itching)
2. Maintain normal sleep quality
3. Maintain normal daily activities, work, and school performance
4. Prevent complications (sinusitis, asthma exacerbation, otitis media)
5. Minimize medication side effects

Specific targets:

• Symptom-free days >80% of the time
• No sleep disruption from nasal symptoms
• No missed work/school due to allergies
• No need for rescue antihistamines >2 days/week

Non-pharmacologic management#

Allergen avoidance (cornerstone of management):

Dust mites:

• Encase mattress, box spring, and pillows in allergen-proof covers
• Wash bedding weekly in hot water (>130°F)
• Remove carpeting if possible; use hard flooring
• Maintain humidity <50% (dust mites thrive in humidity)
• HEPA vacuum weekly

Pet dander:

• Keep pets out of bedroom (minimum)
• Ideally keep pets outdoors or rehome (rarely accepted)
• HEPA air purifier in bedroom
• Wash hands after petting; avoid touching face
• Bathe pets weekly (modest benefit)

Pollen:

• Keep windows closed during high pollen seasons
• Use air conditioning with clean filters
• Shower and change clothes after outdoor activities
• Check pollen counts; limit outdoor time on high days
• Wear sunglasses outdoors

Mold:

• Fix water leaks promptly
• Use exhaust fans in bathrooms and kitchen
• Clean visible mold with dilute bleach
• Maintain humidity <50%
• Avoid raking leaves, mowing grass

Nasal saline irrigation:

• Effective adjunct to pharmacotherapy
• Use daily during symptomatic periods
• Options: neti pot, squeeze bottle, saline spray
• Use distilled or boiled (cooled) water to prevent rare infections
• Helps clear allergens and mucus; reduces need for medications

Pharmacologic management#

Intranasal Corticosteroids (First-line therapy):

Intranasal corticosteroid technique (critical for efficacy):

• Prime pump before first use (usually 6-8 sprays)
• Blow nose gently before use
• Aim spray toward outer wall of nose (away from septum)
• Use opposite hand (right hand for left nostril) to angle correctly
• Sniff gently; don’t snort forcefully
• Don’t blow nose for 15 minutes after

Second-Generation Antihistamines (Add-on or alternative):

Intranasal Antihistamines (Alternative or add-on):

Decongestants (Short-term use only):

Rhinitis medicamentosa (rebound congestion): Occurs with >3-5 days of topical decongestant use. Management: stop oxymetazoline; substitute intranasal corticosteroid; may need oral decongestant bridge for 3-5 days. Recovery takes 1-2 weeks.

Leukotriene Receptor Antagonists:

FDA Boxed Warning for Montelukast: Risk of neuropsychiatric events including suicidal thoughts, agitation, depression, sleep disturbances. Intranasal corticosteroids are preferred first-line. Reserve montelukast for patients with concurrent asthma or those who cannot use intranasal steroids.

Mast Cell Stabilizers:

Anticholinergics (for rhinorrhea-predominant symptoms):

Patient counseling points#

For intranasal corticosteroids:

• “This is your most important allergy medicine. Use it every day during allergy season.”
• “It takes 1-2 weeks to work fully—don’t give up after a few days.”
• “Aim the spray toward your ear, not the middle of your nose, to avoid nosebleeds.”
• “If you get nosebleeds, try switching nostrils with each spray or use saline first.”

For antihistamines:

• “These work best for sneezing and itching, less well for congestion.”
• “Take them regularly during allergy season, not just when symptoms are bad.”
• “Cetirizine may cause mild drowsiness; try taking it at bedtime if this bothers you.”

For allergen avoidance:

• “Medicines work better when you also reduce your exposure to allergens.”
• “The bedroom is most important—you spend 8 hours there every night.”
• “Dust mite covers for your mattress and pillows make a real difference.”

Monitoring and follow-up#

Initial follow-up: 2-4 weeks after starting therapy to assess response

Stable, well-controlled: Every 6-12 months or as needed

Step-up therapy if inadequate response:

1. Verify adherence and proper technique
2. Add second-generation antihistamine to intranasal corticosteroid
3. Consider intranasal antihistamine or combination product
4. Consider allergy testing and immunotherapy referral

Step-down therapy:

• After prolonged good control, can try reducing to PRN intranasal corticosteroid
• Many patients need continuous therapy during allergen season

Patient education#

What is this condition?#

Allergies happen when your immune system overreacts to things that are harmless to most people. These things are called allergens. Common allergens include pollen, dust mites, pet dander, and mold.

When you breathe in an allergen, your body releases chemicals that cause swelling in your nose. This leads to a stuffy nose, runny nose, sneezing, and itching. You might also have itchy, watery eyes.

Allergies are very common. They run in families. If you have allergies, you might also have asthma or eczema.

What you can do#

Use your nasal spray every day during allergy season. It works best when used regularly. It may take one to two weeks to feel the full effect.

Try to avoid the things you are allergic to. Keep windows closed during high pollen days. Use air conditioning. Wash your bedding in hot water every week. Keep pets out of your bedroom.

Rinse your nose with salt water. This helps wash out allergens and mucus. You can buy saline rinse kits at any pharmacy.

Take your allergy pills as directed. They help with sneezing and itching. They work best when taken regularly.

When to seek care#

Call your doctor if your symptoms are not getting better after two to four weeks of treatment. Call if you are having side effects from your medicines. Call if you are getting frequent sinus infections.

See your doctor right away if you have a high fever, severe face pain, or swelling around your eyes. These could be signs of a sinus infection that needs antibiotics.

Questions to ask your doctor#

What am I allergic to? Should I get allergy testing? Am I using my nasal spray correctly? Would allergy shots help me? Could my allergies be making my asthma worse?

Prognosis and monitoring#

Expected course#

Natural history:

• Allergic rhinitis is a chronic condition; symptoms wax and wane
• May improve with age in some patients; others have lifelong symptoms
• Untreated, can lead to complications and reduced quality of life

With optimal treatment:

• Most patients achieve good symptom control
• Quality of life approaches normal
• Complications (sinusitis, asthma exacerbation) are minimized

Factors predicting poorer control:

• Perennial symptoms (year-round allergen exposure)
• Multiple allergen sensitivities
• Concurrent asthma
• Nasal polyps
• Poor adherence to therapy

Monitoring parameters#

Complications to watch for#

Acute bacterial sinusitis:

• Allergic inflammation predisposes to bacterial superinfection
• Suspect if: symptoms >10 days, “double-sickening,” high fever with purulent discharge
• Treatment: antibiotics (amoxicillin-clavulanate)

Chronic rhinosinusitis:

• Persistent inflammation >12 weeks
• May develop nasal polyps
• Requires ENT referral if failing medical management

Asthma exacerbation:

• Allergic rhinitis and asthma share the “unified airway”
• Treating rhinitis improves asthma control
• Ensure asthma is optimally managed

Otitis media with effusion:

• Eustachian tube dysfunction from nasal inflammation
• More common in children
• Usually resolves with rhinitis treatment

Sleep disturbance and fatigue:

• Nasal congestion disrupts sleep quality
• “Allergic fog” impairs concentration and productivity
• Improves with effective treatment

Special populations#

Elderly/geriatric#

Diagnostic considerations:

• Rhinitis in elderly often non-allergic (vasomotor, medication-induced)
• Consider medication review: ACE inhibitors, alpha-blockers, NSAIDs can cause rhinitis
• Atrophic rhinitis (dry, crusted nose) more common with age

Treatment considerations:

• Intranasal corticosteroids remain first-line; safe in elderly
• Second-generation antihistamines preferred over first-generation
• Avoid first-generation antihistamines (diphenhydramine, chlorpheniramine): anticholinergic effects, sedation, falls, cognitive impairment (Beers criteria)
• Use decongestants cautiously: can raise BP, cause urinary retention, insomnia

Beers criteria medications to avoid:

• First-generation antihistamines (diphenhydramine, chlorpheniramine, hydroxyzine)
• Oral decongestants in patients with hypertension or cardiac disease

Chronic kidney disease#

Medication adjustments:

Special considerations:

• Intranasal corticosteroids minimally absorbed; preferred in CKD
• Reduce antihistamine doses as above
• Avoid decongestants if hypertension or fluid overload

Other populations#

Pregnancy:

• Allergic rhinitis may worsen, improve, or stay the same during pregnancy
• “Pregnancy rhinitis” (non-allergic) also common
• First-line: intranasal corticosteroids (budesonide has most safety data—Category B)
• Second-line: loratadine or cetirizine (extensive safety data)
• Avoid: first-generation antihistamines in first trimester; oral decongestants (vasoconstriction risk)
• Immunotherapy: can continue if already on maintenance; don’t initiate during pregnancy

Lactation:

• Intranasal corticosteroids safe (minimal systemic absorption)
• Loratadine, cetirizine compatible with breastfeeding
• Avoid first-generation antihistamines (may decrease milk supply, infant sedation)

Children:

• Intranasal corticosteroids safe and effective; approved for ages 2+
• Second-generation antihistamines safe; dosing varies by age
• Avoid first-generation antihistamines in young children (paradoxical excitation, sedation)
• Consider adenoid hypertrophy if severe nasal obstruction

Asthma comorbidity:

• Treat allergic rhinitis aggressively—improves asthma control
• Intranasal corticosteroids reduce asthma exacerbations
• Consider montelukast if both conditions present
• Immunotherapy benefits both conditions

Polypharmacy considerations:

• Review for drug interactions with antihistamines (CNS depressants, anticholinergics)
• First-generation antihistamines add to anticholinergic burden
• Intranasal corticosteroids preferred—minimal systemic absorption, few drug interactions
• Fexofenadine absorption reduced by fruit juice and antacids

When to refer#

Specialist referral criteria#

Allergy/immunology referral:

• Allergy testing needed (skin prick testing)
• Consideration for allergen immunotherapy
• Symptoms refractory to optimal pharmacotherapy (INS + antihistamine)
• Diagnostic uncertainty
• Severe symptoms significantly impacting quality of life
• Concurrent difficult-to-control asthma

ENT referral:

• Suspected nasal polyps
• Structural abnormality (septal deviation, turbinate hypertrophy)
• Chronic rhinosinusitis failing medical management
• Unilateral symptoms
• Recurrent epistaxis from intranasal corticosteroid use

Urgency levels#

Smartphrase snippets#

Allergic rhinitis, initiating therapy: Allergic rhinitis with [seasonal/perennial] pattern. Started fluticasone nasal 2 sprays/nostril daily + cetirizine 10mg daily. Discussed proper technique and allergen avoidance.

Allergic rhinitis, well-controlled: Allergic rhinitis well-controlled on current regimen. No sleep disruption, minimal breakthrough symptoms. Continue current therapy.

Allergic rhinitis, inadequate response: Allergic rhinitis with inadequate response despite adherent therapy. Adding azelastine nasal spray. Consider allergy referral if still uncontrolled.

Allergic rhinitis, immunotherapy referral: Allergic rhinitis refractory to optimal pharmacotherapy. Referred to allergy for skin testing and immunotherapy consideration.

Related pages#

• Sinus Symptoms (complaint) — differentiating allergic rhinitis from viral URI and bacterial sinusitis
• Sore Throat (complaint) — post-nasal drip as cause of throat symptoms
• Asthma (problem) — unified airway; treating rhinitis improves asthma control
• Otalgia (complaint) — eustachian tube dysfunction from allergic rhinitis
• Hearing Loss (complaint) — otitis media with effusion from allergic rhinitis