The most severe cases of<unk>  can result in hydrops fetalis, which results in fetal death or death soon after birth. Some people with<unk>  may begin to have symptoms in early childhood. Symptoms can include an enlarged head, fluid buildup in the brain, coarse facial features, enlarged tongue, enlarged liver, enlarged spleen, problems with the heart valves, and abdominal hernias. People with<unk>  may also suffer from sleep apnea, frequent lung infections, and problems with vision secondary to cloudy corneas.<unk>  causes various musculoskeletal abnormalities that worsen with age. These can include short stature, joint deformities, dysostosis multiplex, spinal stenosis, and carpal tunnel syndrome. While some individuals have developmental delay, others may have normal intelligence. However, the accumulation of GAGs in the brain usually leads to the slowing of development from ages 1–3, and then a loss of previously learned skills until death.
Sly syndrome
McGillivray syndrome
MORM syndrome
Mungan syndrome
Strømme syndrome
Gordon syndrome
Van Wyk and Grumbach syndrome
RIDDLE syndrome