can be signs of a life-threatening condition. side effects may include allergic reactions, neck and injection site pain, fatigue, and headache. don't take botox® if there's a skin infection. tell your doctor your medical history, muscle or nerve conditions, and medications, including botulinum toxins, as these may increase the risk of serious side effects. for a limited time, you can qualify for two treatments at no cost. stand up to chronic migraine. talk to a headache specialist today. be the you who doesn't cover your moderate to severe plaque psoriasis. be the you who shows up in that dress. who hugs a friend. who is done with treatments that don't give you clearer skin. be the you who controls your psoriasis with stelara® just 4 doses a year after 2 starter doses. stelara® may lower your ability to fight infections and may increase your risk of infections and cancer. some serious infections require hospitalization. before treatment, get tested for tuberculosis. before starting stelara® tell your doctor if you think you have an infection or have symptoms such as: fever, sweats, chills, muscle aches or cough. always tell your doctor if you have any signs of infection, have had cancer, if you develop any new skin growths