Connective tissue diseases

Amyopathic dermatomyositis
Bizarre parosteal osteochondromatous proliferation
Classical Ehlers-Danlos syndrome
Dermatosparaxis Ehlers-Danlos syndrome
Ehlers-Danlos syndromes
Eosinophilic fasciitis
Legg-Calve-Perthes disease
Marfan syndrome
Melorheostosis
Melorheostosis with osteopoikilosis
Mixed connective tissue disease
Osteosclerosis with ichthyosis and premature ovarian failure
Pacman dysplasia
Paget disease of bone - Not a rare disease
Paget disease of bone, familial
Polymyositis
Progressive deafness with stapes fixation
Rheumatoid factor-negative juvenile idiopathic arthritis
Ribbing disease
Scleroderma - Not a rare disease
Temporomandibular ankylosis
Twenty-nail dystrophy
Vascular Ehlers-Danlos syndrome
Weill-Marchesani syndrome
Worth type autosomal dominant osteosclerosis