What is Niemann Pick disease Niemann-Pick disease is a group of rare inherited lysosomal storage disorders that affects many body systems and can affect both children

What is mesenteric lymphadenitis Mesenteric lymphadenitis (also called mesenteric adenitis) is inflammation of the lymph nodes in the membrane that connects your bowel to the abdominal

What is cryoglobulinemia Cryogloblinemia is a vasculitis of small blood vessels that is caused by deposition of cryoglobulins or immune complexes, which are large aggregates

What is astrocytoma An astrocytoma is a brain tumor that starts in cells called astrocytes, star-shaped cells that make up the “glue-like” or supportive tissue

What is bullous pemphigoid Bullous pemphigoid is an autoimmune, chronic supepidermal blistering skin disease. Autoimmune disorders are generated when your body’s natural defenses (e.g., the

What is conjoined twins Conjoined twins are two babies who are born physically connected to each other. Conjoined twins come from the same egg but

What is croup Croup is a viral infection that causes swelling of the windpipe (trachea), the airways to the lungs (the bronchi) and the vocal

What is muscular dystrophy The muscular dystrophies are a group of hereditary diseases that cause progressive weakness and degeneration of the skeletal muscles characterized by

What is mixed connective tissue disease Mixed connective-tissue disease (MCTD) is a rare systemic autoimmune disease that is characterized by features commonly seen in at

What is neuromyelitis optica Neuromyelitis optica also known as Devic disease, is a very rare autoimmune disorder that affects the nerves of your eyes and