Research the causes of these diseases that are similar to, or related to, Autoimmune Urticaria: 1  Idiopathic urticaria without angioedema. 2  Chronic urticaria.  Occult infection (e.g., sinusitis, oral infection, cholecystitis, vaginitis, prostatitis, hepatitis, HIV, tinea manus or pedis)
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.
The other 1 percent is in the blood, muscles, fluid outside the cells, and other body tissues. Some disorders cause calcium to deposit in places where it does not typically belong. Over time, this can add up and cause problems. You may need treatment to prevent complications if you have this extra calcium buildup.