Takayasu’s Arteritis (TA) is an inflammation of large blood vessels, that is more common in women than in men. 80% to 90% of cases occur in women. People who get this form of vasculitis are usually between the ages of 10 and 40 years when the disease starts. Rarely, however, even children and young infants develop TA. The disease affects people around the world, but is most common in Asians, especially in Japan.