Osteogenesis Imperfecta

Osteogenesis imperfecta (OI)—also referred to as brittle bone disease—is a disorder where a person’s bones are very fragile, causing them to break easily, oftentimes without cause. It is relatively rare, affecting approximately 1 in 20,000 people, and “occurs with equal frequency among males and females and among racial and ethnic groups,” says the National Human […]

Porphyria is a rare disorder that can involve multiple body systems. Those who have this disorder can have severe symptoms that require intensive treatment, whereas others may never know they have it.