Endocrine Disorders

A cyst is a closed capsule or sac-like structure, typically filled with liquid, semisolid or gaseous material - very much like a blister. Cysts occur within tissue, and can affect any part of the body. They vary in size from microscopic to the size of some team-sport balls - large cysts can displace internal organs. In anatomy, a cyst can also refer to any normal bag or sac in the body, such as the bladder. Cyst refers to an abnormal sac or pocket in the body that contains either liquid, gaseous or semi-solid substances. A cyst is not a normal part of the tissue where it is located. It has a distinct membrane and division on nearby tissue - the outer or capsular portion of a cyst is called the cyst wall. If the sac is filled with pus it is not a cyst, it is an abscess. The English word cyst comes from the Latin word cystis, which came from the Ancient Greek word kystis, meaning "bladder" or "pouch". What causes cysts? Cysts can be caused by: Tumors Genetic conditions Infections A fault in an organ of a developing embryo A defect in the cells Chronic inflammatory conditions Blockages [...]

Addison’s disease (also known as chronic adrenal insufficiency, hypocortisolism or hypocorticism) is a rare endocrine disorder in which the adrenal gland produces insufficient amounts of steroid hormones (glucocorticoids and often mineralocorticoids). It may develop in children as well as adults, and may occur as the result of a large number of underlying causes. The condition is named after Dr Thomas Addison, the British physician who first described the condition in his 1855 publication On the Constitutional and Local Effects of Disease of the Suprarenal Capsules.[1] The adjective “Addisonian” is used for features of the condition, as well as patients with Addison’s disease.[2] The condition is generally diagnosed with blood tests, medical imaging and additional investigations.[2] Treatment involves replacement of the hormones (oral hydrocortisone and fludrocortisone). If the disease is caused by an underlying problem, it may be possible to address. Regular follow-up and monitoring for other health problems is necessary.[2] Signs and symptoms of Addison’s disease Symptoms The symptoms of Addison’s disease develop insidiously, and it may take some time to be recognized. The most common symptoms are fatigue, muscle weakness, weight loss, vomiting, diarrhea, headache, sweating, changes in mood and personality and joint and muscle pains. Some have marked [...]

Hypothyroidism is the disease state in humans and animals caused by insufficient production of thyroid hormone by the thyroid gland. Cretinism is a form of hypothyroidism found in infants.Causes of Hypothyroidism About three percent of the general population is hypothyroid.[1] Factors such as iodine deficiency or exposure to Iodine-131 (I-131) can increase that risk. There are a number of causes for overt hypothyroidism. Historically, and still in many developing countries, iodine deficiency is the most common cause of hypothyroidism worldwide. In iodine-replete individuals, hypothyroidism is mostly caused by Hashimoto’s thyroiditis, or by a lack of the thyroid gland or a deficiency of hormones from either the hypothalamus or the pituitary.Hypothyroidism can result from postpartum thyroiditis, a condition that affects about 5% of all women within a year after giving birth. The first phase is typically hyperthyroidism. Then, the thyroid either returns to normal or a woman develops hypothyroidism. Of those women who experience hypothyroidism associated with postpartum thyroiditis, one in five will develop permanent hypothyroidism requiring life-long treatment.Hypothyroidism can also result from sporadic inheritance, sometimes autosomal recessive.Hypothyroidism is also a relatively common hormone disease in domestic dogs, with some specific breeds having a definite predisposition.[2]Temporary hypothyroidism can be due to [...]

Diabetes insipidus (DI) is a condition characterized by excretion of large amounts of severely diluted urine, which cannot be reduced when fluid intake is reduced. It denotes inability of the kidney to concentrate urine. DI is caused by a deficiency of antidiuretic hormone (ADH), also known as vasopressin, due to the destruction of the back or “posterior” part of the pituitary gland where vasopressin is normally released from, or by an insensitivity of the kidneys to that hormone. It can also be induced iatrogenically by various drugs. Signs and symptoms of Diabetes insipidus Excessive urination and extreme thirst (especially for cold water and sometimes ice or ice water) are typical for DI. Symptoms of diabetes insipidus are quite similar to those of untreated diabetes mellitus, with the distinction that the urine is not sweet as it does not contain glucose and there is no hyperglycemia (elevated blood glucose). Blurred vision is a rarity. Signs of dehydration may also appear in some individuals since the body cannot conserve much (if any) of the water it takes in. The extreme urination continues throughout the day and the night. In children, DI can interfere with appetite, eating, weight gain, and growth as well. [...]