CSU symptoms, or flares, are similar to other types of hives. In general:
People treating their chronic hives with antihistamines may still have CSU symptoms.
Specialists who focus on chronic spontaneous urticaria include allergists, who specialize in allergies and immune system diseases, and dermatologists, who specialize in medical conditions that affect the skin. Seeing a specialist about your symptoms can help determine a diagnosis.
Download the CSU treatment discussion guide to help start your conversation with a specialist.
What is XOLAIR? XOLAIR® (omalizumab) for subcutaneous use is an injectable prescription medicine used to treat chronic spontaneous urticaria (CSU, previously referred to as chronic idiopathic urticaria (CIU), chronic hives without a known cause) in people 12 years of age and older who continue to have hives that are not controlled with H1 antihistamine treatment. It is not known if XOLAIR is safe and effective in people with CSU under 12 years of age.
XOLAIR is not used to treat other forms of hives.
What is the most important information I should know about XOLAIR? Severe allergic reaction. A severe allergic reaction called anaphylaxis can happen when you receive XOLAIR. The reaction can occur after the first dose, or after many doses. It may also occur right after a XOLAIR injection or days later. Anaphylaxis is a life-threatening condition and can lead to death. Go to the nearest emergency room right away if you have any of these symptoms of an allergic reaction:
Your healthcare provider will monitor you closely for symptoms of an allergic reaction while you are receiving XOLAIR and for a period of time after treatment is initiated. Your healthcare provider should talk to you about getting medical treatment if you have symptoms of an allergic reaction.
Do not receive and use XOLAIR if you are allergic to omalizumab or any of the ingredients in XOLAIR.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
The most common side effects of XOLAIR in people with chronic spontaneous urticaria: nausea, headaches, swelling of the inside of your nose, throat or sinuses, cough, joint pain, and upper respiratory tract infection.
These are not all the possible side effects of XOLAIR. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at (800) FDA-1088 or www.fda.gov/medwatch. You may also report side effects to Genentech at (888) 835-2555 or Novartis Pharmaceuticals Corporation at (888) 669-6682.
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