View Signs And Symptoms Of Influenza In Adults Images. Influenza a symptoms can be confused with signs of other conditions but are usually more sudden and severe. Influenza is an acute viral disease that can affect the upper and lower respiratory tract, is more details about the causes, first signs and general symptoms in adults, as well as the treatment and complications, we will consider in this material.

Complicated influenza is defined as influenza requiring hospital admission and/or with symptoms and signs of lower respiratory tract infection (hypoxaemia, dyspnoea, lung infiltrate) swine flu is similar to the usual human seasonal influenza infection, with most cases in adults and children being mild.

Signs and symptoms of upper and/or lower respiratory tract involvement are present, along with indications of systemic illness such as fever, headache, myalgia, and weakness. Influenza types a and b are responsible for epidemics of. Influenza b symptoms are similar to those of influenza a. People at higher risk of complications, such as those with chronic lung disease, should seek prompt medical attention.