Bronchitis Risk Factors Acute bronchitis occurs most often due to a viral infection that causes the internal lining of the bronchial tubes to become inflamed and undergo the changes that occur with any irritation in your body. Common viruses include the rhinovirus, respiratory syncytial virus , and the influenza virus . Bacteria can also trigger bronchitis . Chemical irritants could cause acute bronchitis. Bronchitis describes irritation of the bronchial tubes. Smoking is an integral risk factor for developing severe bronchitis. Any other ailments that predispose to very similar inflammation can also increase that risk .Mass murderers also associated with psychotropic drug use What’s more noteworthy is the truth that the authors discovered that 55-77 % of teenagers who attempted suicide acquired already been labeled with a diagnosis and had been under treatment. The study essentially demonstrates that psychiatrists are fundamentally flawed with regards to suicide prevention because, Stevenson writes, ‘there is nothing to indicate that medical diagnosis and treatment managed to prevent any suicides.’ If that %age of teens are attempting suicide after treatment offers begun, ‘then it’s likely the treatment itself is usually fueling this epidemic,’ she says. Such medications are becoming blamed for adding to, if not really leading to outright, a spate of mass murders in the last few years in locations like Fort Hood, Texas, Aurora, Colo., and Newtown, Conn.