Viral Upper Respiratory Infection |
- Clinical diagnosis based on recent history of a cold or flu
- Nasal endoscopy to assess for obstruction or inflammation
- No imaging required unless symptoms persist
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- Symptomatic relief with decongestants or nasal saline irrigation
- In most cases, anosmia resolves spontaneously as the infection clears
- Oral or intranasal corticosteroids may be prescribed for persistent inflammation
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- Rest and hydration
- Avoid smoking or exposure to irritants that can worsen inflammation
- Follow hygiene measures to prevent viral spread (e.g., hand washing)
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Chronic Rhinosinusitis |
- Nasal endoscopy to assess for polyps or chronic sinus inflammation
- CT scan of the sinuses if structural causes are suspected
- Allergy testing if allergic rhinitis is suspected
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- Intranasal corticosteroids to reduce inflammation
- Saline nasal irrigation to clear mucus buildup
- Surgical intervention (e.g., endoscopic sinus surgery) for severe or refractory cases
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- Identify and avoid allergens or triggers
- Maintain nasal hygiene with regular saline irrigation
- Consider using a humidifier to keep the nasal passages moist
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Nasal Polyps |
- Nasal endoscopy to visualize polyps
- CT scan to assess the extent of polyp formation
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- Intranasal corticosteroids to shrink polyps
- Oral corticosteroids for short-term use in severe cases
- Surgical removal of polyps (polypectomy) in recurrent or large polyps
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- Regular follow-up to monitor recurrence of polyps
- Continue use of nasal sprays to prevent regrowth
- Avoid irritants such as smoke or strong chemicals
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Head Trauma |
- CT scan or MRI to assess for structural damage (e.g., skull fractures)
- Neurological examination to assess for other cranial nerve involvement
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- Management depends on the extent of injury
- Observation and rest for mild cases
- Rehabilitation therapies such as olfactory training may be helpful
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- Rest and avoid activities that may increase the risk of further head trauma
- Consider olfactory rehabilitation to regain sense of smell
- Follow up with a neurologist for any ongoing symptoms
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COVID-19 Infection |
- Clinical diagnosis based on recent COVID-19 infection
- Nasopharyngeal swab for SARS-CoV-2 RT-PCR
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- Most cases resolve spontaneously over weeks to months
- Nasal saline irrigation and topical steroids may help with nasal congestion
- Olfactory training can be considered for prolonged anosmia
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- Continue to follow COVID-19 guidelines and isolate if necessary
- Practice olfactory rehabilitation (e.g., smelling familiar scents) to regain smell
- Monitor for any persistent or worsening symptoms
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Neurodegenerative Disorders (e.g., Parkinson’s, Alzheimer’s) |
- Clinical diagnosis based on neurological symptoms
- Neuroimaging (MRI or CT) to assess for brain degeneration
- Olfactory testing for early identification of smell deficits
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- No specific treatment for anosmia in these conditions
- Manage underlying neurodegenerative disease
- Olfactory training may provide some benefit
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- Follow up with a neurologist to monitor disease progression
- Engage in cognitive and physical therapy for overall well-being
- Consider olfactory training to enhance remaining sense of smell
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Congenital Anosmia |
- Usually diagnosed based on history and lack of smell since birth
- Genetic testing may be considered in some cases
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- No specific treatment for congenital anosmia
- Management is supportive
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- Educate patients on safety (e.g., detecting smoke or spoiled food)
- Use of smoke detectors and other alert systems for safety
- Encourage adaptation strategies to improve quality of life
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