25,729 articles
Geriatricians
Geriatricians: physicians specially trained in care of older adults (geriatric medicine, comprehensive geriatric assessment). Strongest evidence is better medication management; mortality benefit unproven; persistent workforce shortage.
Geriatrics
Geriatrics: medical specialty for older adults, defined by life stage. Founded clinically by Marjory Warren (1935, UK); core method is comprehensive geriatric assessment, shown to raise survival at home and cut nursing home admissions.
Geritol
Geritol: American supplement brand launched in 1950 as an iron and B-vitamin tonic for "tired blood"; famous 1950s TV ads, $812,000 FTC fine in 1965, now sold as a liquid and a 27-nutrient multivitamin.
Germ cell tumor
Germ cell tumor: a benign or malignant neoplasm arising from sperm- or egg-precursor cells, occurring in the gonads or extragonadal sites. Classified by WHO into GCNIS-derived and non-GCNIS groups; includes seminoma, teratoma, yolk sac tumor, choriocarcinoma.
Germ cell tumour of testis
Germ cell tumour of testis (testicular germ cell cancer): malignant tumour of sperm-forming germ cells, over 90% of testicular cancer; seminoma or nonseminoma, GCNIS-derived, peak in men 15-35, highly curable with cisplatin chemotherapy.
German cockroach (Blattella germanica) allergen skin prick test solution
German cockroach (Blattella germanica) allergen skin prick test solution (德国小蠊变应原皮肤点刺液), Wolwo Bio-Pharmaceutical's NMPA-approved 7000 DU/ml in-vivo diagnostic for type I cockroach allergy, sensitivity 91.63%, specificity 85.45%.
Geroderma osteodysplastica
Geroderma osteodysplastica (GO, OMIM 231070, Walt Disney dwarfism), a rare autosomal recessive GORAB-related cutis laxa syndrome with wrinkled skin, progeroid face, joint laxity, and severe osteoporosis with fractures.
Gerold L. Schiebler
Gerold L. Schiebler (1928–2024) was an American pediatric cardiologist at the University of Florida who chaired its pediatrics department and built Florida's Children's Medical Services program.
Gerold Stucki
Gerold Stucki, born 1959, is a Swiss physician-scientist, professor at the University of Lucerne and director of Swiss Paraplegic Research, known for proposing functioning as a third health indicator alongside mortality and morbidity.
Gerontology
Gerontology is the scientific, interdisciplinary study of aging and older adulthood, covering biological, psychological, and social dimensions; unlike geriatrics, it is broad rather than a medical specialty.
Gerstmann syndrome
Gerstmann syndrome, also called angular gyrus syndrome, is a rare neuropsychological tetrad of finger agnosia, left-right disorientation, agraphia, and acalculia after dominant parietal lobe lesions, first described by Josef Gerstmann in 1924 and now explained by subcortical white matter disconnection.
GESPIC study
GESPIC (German Spondyloarthritis Inception Cohort) is a prospective German multicentre cohort begun in 2000 following 525 patients with early axial spondyloarthritis for 10 years, with arms for juvenile, peripheral, Crohn's, uveitis, and axial psoriatic SpA.
Gestalt therapy
Gestalt therapy, founded by Fritz and Laura Perls with Paul Goodman (founding text 1951), is a here-and-now psychotherapy using empty-chair and awareness techniques, influenced by psychoanalysis, Gestalt psychology, and existentialism.
Gestational choriocarcinoma
Gestational choriocarcinoma, also called GC or GCC, is a malignant pregnancy-related trophoblastic tumor marked by early vascular invasion, lung metastasis, β-hCG secretion, and high cure rates with chemotherapy.
Gestational diabetes
Gestational diabetes mellitus (GDM) is diabetes first diagnosed during pregnancy, affecting 5-9% of U.S. pregnancies. Screened at 24-28 weeks by OGCT/OGTT; treated with diet, exercise, insulin; raises later type 2 diabetes risk.
Gestational hypertension
Gestational hypertension, also called pregnancy-induced hypertension (PIH), is new-onset BP ≥140/90 mm Hg after 20 weeks of pregnancy without proteinuria; it is temporary, may evolve into preeclampsia, and predicts later hypertension.
Gestodene
Gestodene (GSD), a third-generation synthetic progestin developed by Schering, used with ethinylestradiol in combined oral contraceptives such as Femodene and Millinette; most potent progestin per weight, 75 mcg dose, VTE risk about 50-80% higher than levonorgestrel pills, not US-approved.
Get With The Guidelines
Get With The Guidelines (GWTG) is a voluntary hospital quality-improvement registry run by the American Heart Association, with over 2,800 participating US hospitals and 13 million patient records.
Gevokizumab
Gevokizumab (XOMA 052, VPM087) is a humanized IgG2 allosteric monoclonal antibody against interleukin-1 beta developed by XOMA and Servier; its phase 3 EYEGUARD-B uveitis trial missed its primary endpoint and the drug was never approved.
GFH009 (CDK9 inhibitor; SLS009)
GFH009, also called SLS009 or tambiciclib, is a highly selective small-molecule CDK9 inhibitor in-licensed by SELLAS from GenFleet, developed for relapsed/refractory AML and lymphomas, with FDA orphan drug and fast-track designations and Phase 2a venetoclax-azacitidine combination testing.
GGSH-MC trial
GGSH-MC (Guided Growth in Spastic Hip - Multicenter Study, NCT06956729) is a Spanish multicenter randomized controlled trial testing proximal femoral guided growth plus standard care versus standard care in children aged 3-8 with spastic cerebral palsy and hip migration of 30-60%.
Ghassan Abu-Sittah (غسان سليمان أبو ستة)
Ghassan Abu-Sittah (غسان أبو ستة), born 1969 in Kuwait, is a British-Palestinian plastic and reconstructive surgeon, AUB Conflict Medicine Program founder, 43-day Gaza war surgeon in 2023, and rector of the University of Glasgow.
Ghebre E. Tzeghai
Ghebre (Gabe) E. Tzeghai is an American pharmaceutical and consumer-health scientist who spent over 18 years in R&D at Procter & Gamble before co-founding Summit Innovation Labs in Ohio.
Ghosal hematodiaphyseal dysplasia
Ghosal hematodiaphyseal dysplasia (Ghosal syndrome, OMIM 231095) is a rare autosomal recessive TBXAS1-related disorder combining metadiaphyseal sclerosis of long bones with corticosteroid-responsive anemia from bone marrow fibrosis, mainly in Middle Eastern and Indian subcontinent populations.
Ghrelin
Ghrelin is a 28-amino-acid acylated stomach peptide hormone, the endogenous GHS-R1a ligand discovered by Kojima in 1999, named from Proto-Indo-European "ghre" (grow); it stimulates growth hormone release and hunger.
GI cocktail
GI cocktail: a mixed oral dose of liquid antacid, viscous lidocaine, and sometimes an anticholinergic (nicknamed pink lady) once given in emergency departments for dyspepsia; trials show no benefit over plain antacid.
Giant axonal neuropathy
Giant axonal neuropathy (GAN), also called giant axonal neurodegeneration, is a rare autosomal recessive disorder caused by GAN gene mutations encoding gigaxonin, causing giant neurofilament-packed axons, kinky hair, childhood-onset progressive neuropathy, and death typically by the third decade.
Giant cell arteritis
Giant cell arteritis (temporal arteritis, Horton's disease) is a granulomatous large-vessel vasculitis of people over 50 causing headache, jaw claudication, and vision loss; diagnosed by biopsy, ultrasound halo sign, and 2022 ACR/EULAR criteria, treated with glucocorticoids, tocilizumab, and upadacitinib.
Giant cell tumor of bone
Giant cell tumor of bone, also called osteoclastoma, is a rare, usually benign but locally aggressive bone tumor that typically arises near joints in young to middle-aged adults.
Giant papillary conjunctivitis
Giant papillary conjunctivitis (GPC), also called contact lens-associated papillary conjunctivitis (CLAPC), is an inflammation of the upper tarsal conjunctiva with giant papillae, mainly in contact lens wearers, causing itching, mucus, and lens intolerance.