<unk>  is a group of inherited disorders marked by extremely loose joints, hyperelastic skin that bruises easily, and easily damaged blood vessels.
Ehlers-Danlos syndrome
Ehlers–Danlos syndrome
Ataxia telangiectasia
Klein-Levin syndrome
Singleton-Merten syndrome
Kearns-Sayer syndrome
Senior-Løken syndrome
Bernard-Soulier syndrome