Endocrine and Metabolic Disorders

Hypertension with hypokalemia is seen in renal artery stenosis (renin-mediated), Cushing's disease (cortisol excess), and primary hyperaldosteronism (Conn's syndrome) due to mineralocorticoid excess. End-stage renal disease typically causes hypertension with hyperkalemia (not hypokalemia) due to reduced potassium excretion. ESRD is the exception.

The triad of amenorrhea, weight loss, and an eating disorder presentation in a young woman is classic for anorexia nervosa, which causes hypothalamic suppression. Occult malignancy, HIV, and hypothyroidism would present with different clinical features (weight gain in hypothyroidism, systemic symptoms in cancer/HIV).

Iodine deficiency causes goiter (enlarged thyroid gland) because iodine is essential for thyroid hormone production. Rickets is from vitamin D deficiency, diabetes involves insulin, and beriberi is from vitamin B1 (thiamine) deficiency.

Hypocalcemia results from insufficient secretion of parathyroid hormone (PTH). PTH normally increases blood calcium levels by stimulating bone resorption, enhancing renal calcium reabsorption, and promoting intestinal calcium absorption through vitamin D activation.

Pituitary nanism (dwarfism) is caused by hyposecretion (underproduction) of somatotrophic hormone (growth hormone, GH) from the anterior pituitary gland. ACTH affects adrenal cortex function, not growth.

Gout is a metabolic disorder characterized by accumulation of uric acid crystals in joints and surrounding tissues, causing intense pain and inflammation. It occurs when uric acid levels exceed solubility. Rheumatoid arthritis is autoimmune, osteoarthritis involves wear-and-tear, and rickets is caused by vitamin D deficiency affecting bone development - none involve uric acid crystals.

Insulin is a hormone produced by the pancreas that regulates blood glucose levels. A deficiency of insulin leads to diabetes mellitus, where the body cannot properly process glucose, resulting in high blood sugar levels.

Diabetes mellitus is fundamentally a disorder of carbohydrate metabolism, where the body cannot properly regulate blood glucose levels due to insulin deficiency or resistance. While diabetes can affect protein and fat metabolism secondarily, the core defect involves carbohydrate processing.

Asprosin lacks in people with Wiedemann–Rautenstrauch syndrome.

Demineralization is caused by over-secretion of parathormone and occurs usually due to over growth of parathyroid glands.

Diabetes occurs when the pancreas fails to produce sufficient insulin or the body becomes resistant to insulin, leading to excess sugar (glucose) in the blood and urine. The pancreas is the organ responsible for regulating blood sugar levels.

Ringworm is a fungal skin infection that causes characteristic circular, red, itchy rashes with raised edges. Goitre affects the thyroid, migraine involves headaches, and epilepsy is a neurological disorder - none cause circular skin swellings.

Insufficient dietary iodine causes the thyroid gland to enlarge (goiter) as it tries to compensate for low iodine levels needed to produce thyroid hormones. Cretinism results from congenital iodine deficiency, not acquired dietary deficiency.

Iodine deficiency causes the thyroid gland to enlarge (goiter) as it struggles to produce thyroid hormones. The gland grows trying to compensate for insufficient iodine needed for hormone synthesis. Iron deficiency causes anemia, calcium deficiency affects bones.