Coronavirus: the loss of smell is a symptom of the disease

Since the outbreak of the coronavirus pandemic, a wide range of symptoms have been associated with the virus. Initially, fever, cough, and difficulty breathing were commonly acknowledged symptoms. However, as researchers continue to study this novel virus, they have discovered an intriguing symptom that stands out from the rest – the loss of . The sudden loss of the of smell, also known as anosmia, is becoming increasingly recognized as a potential indicator of a coronavirus infection.

Before the pandemic, anosmia was commonly associated with other respiratory infections, allergies, or nasal obstructions. But, with the emergence of COVID-19, it has become evident that this specific symptom can be a distinct characteristic of the disease. A growing body of evidence suggests that the loss of the sense of smell can be an early sign of a coronavirus infection, even before other traditional symptoms occur.

Several studies conducted in various parts of the world have observed a significant correlation between anosmia and COVID-19. For instance, a study published in the European Archives of Oto-Rhino-Laryngology reported that out of 417 coronavirus-positive patients, 85.6% had anosmia or hyposmia, a reduced ability to perceive smell. Another study conducted in South Korea found that among their COVID-19 patients, 30.4% reported anosmia as their initial or major symptom.

The issue of losing the sense of smell has become so prevalent that healthcare organizations have incorporated it into their guidelines. The Centers for Disease Control and Prevention (CDC) recognized anosmia as a symptom of COVID-19, advising individuals experiencing this symptom to self-isolate and seek medical advice. Similarly, the World Health Organization (WHO) added anosmia as a possible symptom, raising awareness about its significance.

The biological explanation behind the loss of smell related to COVID-19 lies in the mechanism of viral entry into the body. The SARS-CoV-2 virus, which causes COVID-19, primarily the respiratory system, including the olfactory epithelium responsible for the sense of smell. The virus enters the body through the nose and attaches to the ACE2 receptors present in the nasal cavity, subsequently damaging the sense of smell. This distinctive mechanism differentiates coronavirus-related anosmia from other causes of smell loss.

Interestingly, the loss of smell due to COVID-19 may persist even the patient has recovered from other symptoms. The temporary or prolonged anosmia experienced by COVID-19 survivors has raised concerns about its potential long-term impact on an individual’s quality of life. The sense of smell plays a vital role in perception, the appreciation of food, and even in detecting hazardous substances. Therefore, addressing and managing this particular symptom is crucial in providing comprehensive care to affected patients.

The identification of anosmia as a potential symptom of COVID-19 has significant implications for population screening, diagnosis, and self-isolation measures. Recognizing this symptom can lead to early detection, prompt medical intervention, and the prevention of further transmission. Additionally, it assists health authorities in better understanding the virus and tailoring public health guidelines accordingly.

In conclusion, the loss of smell, or anosmia, has emerged as a distinctive symptom of COVID-19. Although present in other respiratory illnesses, it appears to be particularly prevalent among coronavirus-infected individuals. Recognizing and acknowledging this symptom can significantly contribute to successful early detection and control of the virus. Furthermore, addressing the long-term effects of anosmia on the quality of life of COVID-19 survivors is of utmost importance. As we continue to battle against this ongoing pandemic, understanding each aspect of the disease, including its unique symptoms, is vital in protecting ourselves and those around us.