Complications

Complications can arise that may require special attention, including:

• Developmental delays. If your child is affected developmentally, he or she may have difficulty with organization and spatial sense. Sometimes the developmental challenges are significant enough to require a special plan to address your child's learning and educational needs.
• Bleeding and bruising. Sometimes the excessive bleeding common in Noonan syndrome isn't discovered until a person has dental work or surgery and experiences excessive bleeding.
• Lymphatic complications. These usually involve excess fluid that gets stored in various places in the body. Sometimes fluid can collect in the space around the heart and lungs.
• Urinary tract complications. Structural abnormalities in the kidneys may increase the risk of urinary tract infections.
• Fertility issues. Males may have a low sperm count and other fertility problems because of undescended testicles or testicles that don't function properly.
• Increased risk of cancer. There may be an increased risk of developing certain types of cancer, such as leukemia or certain types of tumors.