Archives: Conditions A-Z

Pulmonary Arterial Hypertension

Pulmonary Arterial Hypertension What is Pulmonary Arterial Hypertension? Pulmonary arterial hypertension (PAH) is a rare, progressive disease characterized by abnormally…

Systemic Mastocytosis

What is Systemic Mastocytosis? Systemic Mastocytosis (SM) is a rare hematological disorder characterized by the abnormal accumulation and activation of…

Primary Immunodeficiency

What is Primary Immunodeficiency? Primary immunodeficiency (PID) refers to a group of more than 400 rare genetic disorders that affect…

Myasthenia Gravis

What is Myasthenia Gravis? Myasthenia gravis (ORPHA code 589) is a rare autoimmune neuromuscular disorder characterized by fluctuating weakness and…

Pompe Disease

What is Pompe Disease? Pompe disease is a rare genetic disorder caused by deficiency of the enzyme acid alpha-glucosidase (GAA),…

Amyotrophic Lateral Sclerosis

Amyotrophic Lateral Sclerosis (ALS) What is Amyotrophic Lateral Sclerosis? Amyotrophic Lateral Sclerosis (ALS), also known as Lou Gehrig's disease or…

Spinal Muscular Atrophy

What is Spinal Muscular Atrophy? Spinal muscular atrophy (SMA) is a rare genetic neuromuscular disorder characterized by the progressive loss…

Duchenne Muscular Dystrophy

Duchenne Muscular Dystrophy What is Duchenne Muscular Dystrophy? Duchenne Muscular Dystrophy (DMD) is a severe genetic disorder characterized by progressive…