By Suzannah Hills PUBLISHED: 10:35 EST, 2 October 2012 | UPDATED: 10:58 EST, 2 October 2012 A baby boy has been born with a life-threatening muscle hardening condition that is so rare only 14 people in the world have ever been diagnosed with it. Seven-month-old Casen Buswell suffers from Glomuvenous malformations plaque type that causes his blood vessels, skin and muscles to harden. It is caused by a missing glomulin gene and will only get worse as he gets older. If left untreated, it can eventually lead to heart failure. SCROLL DOWN FOR VIDEO Rare: Casen Buswell, seven months, pictured with his mother Jenna, suffers from a rare condition called Glomuvenous malformations plaque type
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Casen Buswell, seven months, suffers from Glomuvenous malformations plaque type that causes his blood vessels, skin and muscles to harden
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Only 14 people in the world have ever been diagnosed with the condition
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Experts in Belgium believe they can help Casen, from Puyallup, Washington, with laser treatments to prevent his muscles from hardening
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But the family have had to fundraise thousands of pounds to cover the cost of the flights to @placeholder and for his treatment.