Is a bitter taste on the tongue a symptom of COVID-19?

Generally speaking, a bitter taste on the tongue is not necessarily caused by a novel coronavirus infection. The cause should be evaluated based on specific circumstances, as detailed below:

A bitter taste in the mouth has complex causes. Although novel coronavirus infection may lead to taste disturbances, it is not the only possible reason. Consuming overly salty or spicy foods, staying up late, or suffering from insomnia can disrupt the body's condition and temporarily affect taste sensation. Digestive system disorders such as gastritis or cholecystitis, or constitutional issues like excessive liver fire, often come with a bitter taste in the mouth. Additionally, side effects of certain medications or poor oral hygiene leading to bacterial growth can also cause a bitter sensation on the tongue. Therefore, one cannot conclude a COVID-19 infection based solely on this symptom.

When experiencing a bitter taste in the mouth, start by adjusting your diet—consume more light, fresh fruits and vegetables, and reduce intake of spicy and irritating foods. Maintain a regular sleep schedule and avoid staying up late. Brush your teeth thoroughly each morning and evening, and rinse your mouth after meals to keep your oral cavity clean. Drink plenty of warm water to promote metabolism and help relieve taste disturbances. If the bitter taste persists for more than a week or is accompanied by other symptoms such as fever or cough, seek medical attention promptly to determine the underlying cause. Do not self-diagnose or take medication without professional guidance, to ensure proper and accurate management when health issues arise.