E20-E35: Disorders of other endocrine glands

E23: Hypofunction and other disorders of pituitary gland

The E23 group encompasses conditions related to hypofunction and other disorders of the pituitary gland, a small structure at the base of the brain. The pituitary gland plays a crucial role in the body's hormonal system, producing various hormones that regulate essential body functions, such as growth, metabolism and stress response. Hypofunction refers to lowered or insufficient production of these hormones. Common symptoms of pituitary gland disorders might include headaches, visual problems, unexplained weight changes, fatigue, and altered mood or cognitive abilities. The causes are generally diverse, including issues like tumors, infections, certain kinds of medication, or radiation therapy. These conditions can gradually develop over time or may occur abruptly, potentially impacting multiple systems due to the pituitary gland's central role in hormonal regulation.