<unk>  also known as marble bone disease and Albers-Schonberg disease is an extremely rare inherited disorder whereby the bones harden, becoming denser, in contrast to the more prevalent osteomalacia, in which the bones soften.
It can cause osteosclerosis.
Osteopetrosis
Osteochondrosis
Osteoma
Osteopoikilosis
Myositis ossificans
Osteochondroma
Osteomyelitis
Osteoid osteoma