A lack of the disease-fighting antibody called immunoglobulin A (IgA) may cause frequent infections or serious complications.
Disease
Wilson's disease
This inherited disease causes copper to build up in vital organs, especially the liver, brain and eyes. It's treatable when caught early.
Disease
Arteriosclerosis / atherosclerosis
Learn about the symptoms, causes and treatments for hardening of the arteries.
Disease
Bullous pemphigoid
Learn about the symptoms, treatment and self-care strategies for the itchy blisters of this skin condition that affects older adults.
Disease
Ramsay Hunt syndrome
A shingles outbreak can affect the facial nerve near one of your ears, potentially causing facial paralysis and hearing loss.
Disease
Bee sting
Learn about symptoms, treatment, self-care tips and prevention of bee stings, which in some people cause severe allergic reaction.
Disease
Cyclosporiasis (cyclospora parasite)
Learn how cyclospora spreads, what symptoms it causes, when to seek care, and how the infection is diagnosed, treated and prevented.
Disease
Cryoglobulinemia
When blood proteins clump together at body temperatures below 98.6 F (37 C), they can block blood flow and damage the skin, joints, nerves and organs.
Disease
Monoclonal gammopathy of undetermined significance (MGUS)
MGUS is a condition in which altered plasma cells make monoclonal proteins. MGUS may increase the risk of certain blood cancers and related conditions.
Disease
Polymyositis
The muscle weakness from this condition can make it hard to climb stairs or reach up. Breathing and swallowing also can be affected.
Disease
Myelofibrosis
Find out more about this bone marrow cancer. Learn about symptoms, diagnosis and treatments for primary myelofibrosis and secondary myelofibrosis.
Disease
Castleman disease
This rare condition involves an overgrowth of cells in your body's lymph nodes. Treatment varies depending on how many lymph nodes are involved.