What are the symptoms of a fourth positive COVID-19 infection?

"Fourth positive" for COVID-19 refers to the fourth infection with the novel coronavirus. In general, symptoms of a fourth infection may include sore throat, fever, fatigue, reduced or lost sense of smell and taste, and decreased appetite. If these symptoms occur, it is recommended to seek medical attention immediately. A detailed analysis is as follows:

1. Sore Throat

Infection with the novel coronavirus may cause inflammation in the throat, leading to soreness. Patients may experience a burning or dull pain in the throat, sometimes accompanied by coughing or cold-like symptoms.

2. Fever

A fourth infection with the novel coronavirus can trigger an inflammatory response from the immune system, producing pyrogenic substances that stimulate the body's temperature regulation center, resulting in fever.

3. Fatigue

A fourth infection may activate the immune system, potentially causing systemic fatigue. Patients may feel physically heavy and lack energy.

4. Reduced or Lost Sense of Smell and Taste

The novel coronavirus may affect the sensory nerves responsible for smell and taste, leading to partial or complete loss of these senses. Patients may be unable to perceive odors or flavors normally, or may notice a significant reduction—this is one of the more characteristic symptoms of novel coronavirus infection.

5. Decreased Appetite

The novel coronavirus may impact the gastrointestinal system, causing reduced appetite. Patients may lose interest in food, experience a marked decrease in hunger, and consequently suffer from insufficient energy intake.

Under medical guidance, patients may use medications such as Lianhua Qingwen capsules, ibuprofen sustained-release capsules, and acetaminophen tablets for treatment. Additionally, maintaining a light diet, drinking plenty of water, and following medical advice for medication can aid in recovery.