Dystrophic Calcification: This occurs in damaged or necrotic tissues. It is the most common type observed in children with autoimmune conditions. Metastatic Calcification: This type involves calcium deposition in normal tissues due to elevated serum calcium levels. Idiopathic Calcification: This occurs without any underlying tissue damage or systemic calcium imbalance. Iatrogenic Calcification: This type is caused by medical interventions, such as intravenous calcium administration.