B25-B34: Other viral diseases

The B25-B34 range in the ICD-10 WHO classification represents a group of infectious diseases caused by viruses. Viruses are microscopic organisms that invade healthy cells within the human body. They can be transmitted via different routes such as airborne droplets, direct skin contact, or through bodily fluids. Once inside the body, they use the host's own cells to reproduce, leading to a wide array of symptoms. Symptoms of viral diseases can vary widely but often include fever, fatigue, muscle aches, and digestive disturbances, among others. The progression and severity of these diseases range from short-term, self-limited illnesses to chronic conditions with periods of active disease and remission. Some viral diseases can lead to serious, even life-threatening complications, particularly in people with weakened immune systems. Moreover, viral diseases can affect multiple systems in the body, from the respiratory to the digestive and nervous systems. Although the symptoms and progression of specific viral diseases differs, their shared root in viral infections unites them within the B25-B34 range.