including tuberculosis, and cancers, including lymphoma, have happened, as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. tell your doctor if you've been to areas where certain fungal infections are common and if you've had tb, hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. ask your rheumatologist about humira. go to humira.com to see proof in action. if you can't afford your medicine, abbvie may be able to help.