By Jeremy Mascaro, PA-C
Physicians Assistant, ENT Specialists of Northwest Ohio 

Smell and taste disorders can be overlooked, yet they can significantly affect a patient’s quality of life, nutritional status and overall well-being. These sensory deficits may present subtly but can be early indicators of underlying health conditions or contribute to broader health challenges, particularly in older adults. For healthcare providers, recognizing the prevalence and impact of olfactory and gustatory dysfunctions is important in delivering comprehensive and empathetic care.

The sense of smell, or olfaction, plays a critical role in detecting hazards such as smoke or spoiled food while enhancing the flavor of meals. While often mistaken for smell, taste refers to the basic sensations of sweet, sour, salty, bitter and umami. Together, these senses influence appetite, food enjoyment and social interactions. Disorders of these senses can lead to decreased interest in eating, unintended weight loss, malnutrition, depression and even social withdrawal. These consequences are particularly concerning for elderly patients and those with chronic illnesses who may already be vulnerable to nutritional deficiencies.

Smell and taste disorders can stem from a variety of causes. Viral infections, including upper respiratory illnesses and COVID-19, have been frequently associated with sudden changes in these senses. In addition, conditions such as chronic rhinosinusitis, nasal polyps, head trauma, neurodegenerative diseases like Parkinson’s and Alzheimer’s, and certain medications can also impair sensory function. Sometimes, the disorder may be idiopathic, with no identifiable cause. Smoking, poor oral hygiene and dental infections can further exacerbate symptoms.

Despite their impact, these disorders are often underreported by patients and underdiagnosed by clinicians. Many patients may not recognize the gradual loss of smell or taste until it significantly interferes with daily activities. Others may feel embarrassed to bring up symptoms that they perceive as trivial. This presents an opportunity for primary care providers to proactively inquire about sensory changes during routine visits, particularly in high-risk populations.

Diagnosis of smell and taste disorders begins with a detailed history and physical examination. Providers should explore recent illnesses, head injuries, medications, nasal congestion and neurological symptoms. In some cases, referral to an otolaryngologist or neurologist may be warranted for further evaluation, including smell identification tests or imaging studies. Early identification of the underlying cause can often lead to symptom improvement or even full recovery.

Treatment options vary depending on the underlying etiology. Addressing nasal inflammation, modifying medications, managing chronic sinus conditions or promoting smoking cessation can lead to improvements. In cases where the dysfunction is permanent or progressive, supportive strategies such as flavor enhancement of food, nutritional counseling and patient education can mitigate the impact on daily life. Emotional support is also essential, as the sensory loss can be isolating and emotionally distressing.

Incorporating smell and taste assessments into primary care enhances patient-centered care and strengthens early detection of broader health issues. As awareness grows, providers have a valuable opportunity to improve outcomes and help patients maintain a higher quality of life through simple yet meaningful sensory evaluations.