When atypical proteins in the blood clump together at temperatures below 98.6 F (37 C), the clump can block blood flow and damage the skin, joints and nerves.
Disease
Granulomatosis with polyangiitis
This disease can cause swelling in the blood vessels of the nose, sinuses, throat, lungs and kidneys. Prompt treatment is key.
Disease
Castleman disease
This rare disorder involves an overgrowth of cells in your body's lymph nodes. Treatment varies depending on how many lymph nodes are involved.
Disease
Hypoparathyroidism
Learn more about this condition in which low levels of parathyroid hormone upset the balance of calcium and phosphorus in the body.
Disease
Chronic traumatic encephalopathy
This brain disease is likely caused by repeated concussions, but this condition isn't well understood.
Disease
Gastritis
Learn about the causes and treatments for this inflammation of the stomach lining.
Disease
Cyclic vomiting syndrome
This condition often starts in childhood and is marked by spells of vomiting several times an hour over a period of hours or days.
Disease
Liver hemangioma
This noncancerous liver mass usually doesn't need treatment. Find out more about this common liver condition and when to seek help.
Disease
Subconjunctival hemorrhage (broken blood vessel in eye)
Learn about this common eye condition that may look alarming but is usually harmless and clears up without treatment.
Disease
Bladder stones
Minerals in urine can form crystals when the bladder does not empty all the way.
Disease
Urethral stricture
Narrowing of the tube that carries urine from the body, called the urethra, can limit urine flow and cause a number of problems.
Disease
Monoclonal gammopathy of undetermined significance (MGUS)
A condition of blood plasma that produces altered antibodies that increase the risk of blood cancers and other conditions.