Although it is rare, there may also be involvement of the internal organs, appearing subcutaneous nodules or inflammation of blood vessels. It is the rarest but the most serious form. It is characterized by an outbreak of spots on the skin and fever in peaks daily. The boys are very affected and sick during the afternoon fever Keto Viante, but they feel much better the next morning when the temperature goes down. They often have swollen lymph nodes.
This type of arthritis lasts several weeks. The child is weak, suffers from anemia, loses weight and the disease can affect growth, although it recovers when the disease is in remission. It usually affects men who are more than 8 or 10 years old. It usually affects one or two joints in the lower limbs such as the hips, knees or ankles. These children need a very intensive special exercise program.