When your child’s low muscle tone (hypotonia) goes unexplained, a rare genetic disorder may be the cause
This website provides information about one rare disorder called Aromatic L-amino Acid Decarboxylase (AADC) deficiency, which can cause hypotonia and other symptoms in children.Learn more
Watch one family talk about their experience with AADC deficiency and the journey they took to get a diagnosis for their daughter.
“She’s an angel. We feel like we’ve been blessed with an angel, and Jillian’s got an amazing spirit.”—Kelly Heger, mother and caregiver of Jillian HegerConnect with PTC Therapeutics