People with some forms of inflammatory arthritis, like rheumatoid arthritis and lupus, have weakened immune systems, which can make them more likely to develop complications from the flu. Some medications used to treat inflammatory arthritis can also weaken the immune system.
Most people who get the flu do not need medical treatment and recover in less than two weeks. However people with weakened immune systems are more susceptible to flu-related complications, such as sinus infections, ear infections, bronchitis, or pneumonia.
