Calcium Pyrophosphate Dihydrate
Dihydrate Crystal Deposition (CAL-see-um PIE-row-FOX-fate DIE-high-drate DEH-poo-ZISH-un)
is a condition that causes pain, redness, heat, and swelling in one or more joints. Also
referred to as Pseudo Gout or Chondrocalcinosis.
Causes of Calcium
It is caused by
deposits of calcium pyrophosphate dihydrate crystals in a joint, which weaken the
cartilage and cause it to break down more easily. The presence of these tiny CPPD crystals
in the joints, and the body's reaction to these crystals, creates inflammation to attack
the crystals. It is not known why the body forms these crystals, but may be an abnormality
in the cartilage cells or connective tissue. The cause also may be a genetic tendency.
Symptoms of Calcium
The movement of the
CPPD crystals into joints can cause sudden and severe pain in the joint. Inflammation may
occur causing redness, warmth and swelling of the joint. Over time, damage may be done to
the cartilage (which acts as a cushion between bones) allowing bone to rub against bone.
Diagnosis of Calcium
Detailed medical history
Joint aspiration to check for crystals
Joint X-rays to show crystals
Blood tests to rule out other diseases such as gout, rheumatoid arthritis or
Removing fluid and crystals