HAE is rare so many doctors will never see a patient with HAE, which can lead to delayed diagnosis or misdiagnosis for some patients. HAE symptoms are often mistaken for other things, such as allergies, appendicitis, or gastrointestinal problems.
HAE is usually passed down through families, so your doctor will likely ask if anyone else in your family has been diagnosed.
To know for certain if you have HAE, your doctor may also perform a blood test to measure protein levels. Measuring levels of the proteins C4 and C1-INH will not only help determine if you have HAE, but will also help identify the type.
Current guidelines recommend that people with HAE have an acute therapy as part of their treatment plan, so they are always prepared to treat if an unexpected attack occurs. Guidelines also support exploring both preventive and acute therapy as part of a treatment plan. People with HAE should be evaluated for long-term preventive treatment at every doctor’s visit, or at least once a year.
FIRAZYR is a medicine used to treat acute attacks of HAE in adults 18 years of age and older. With FIRAZYR, you can inject yourself as soon as you recognize the symptoms of an acute HAE attack. A healthcare provider will teach you or your caregiver how to inject FIRAZYR.
FIRAZYR works by blocking bradykinin from binding to B2 receptors, which reduces the activity of bradykinin and thereby treats the symptoms of acute attacks of HAE.
Note: It is important to know that laryngeal (throat) attacks can become life-threatening. If you have an HAE attack involving the throat, inject FIRAZYR as directed and then go to the nearest hospital emergency room right away.