25,729 articles
HNC study
HNC study: clinical research on head and neck cancer, chiefly rehabilitation and survivorship trials such as RPC, CaRe, GRRAND-F, and NUTRI-HAB, targeting dysphagia, lymphedema, and quality of life.
HNRNPA1-related adult-onset distal myopathy
HNRNPA1-related adult-onset distal myopathy, also called distal myopathy type 3 (MPD3) or Finnish upper limb-onset distal myopathy, is a rare autosomal dominant HNRNPA1 gene muscle disease causing adult-onset hand and foot weakness with rimmed vacuoles; no approved treatment exists.
HNVAC
HNVAC is an inactivated, monovalent H1N1 2009 pandemic flu vaccine from Bharat Biotech of Hyderabad, India, launched in 2010 as India's first cell-culture swine flu vaccine.
Hobnail hemangioma
Hobnail hemangioma, also called targetoid hemosiderotic hemangioma (THH), is a rare benign cutaneous vascular tumor first described in 1988, with hobnail endothelial cells, a biphasic dermal growth pattern, and a targetoid clinical appearance.
Hodgkin lymphoma
Hodgkin lymphoma, also called Hodgkin disease, is a B-cell cancer of the immune system defined by Reed-Sternberg cells, with classic and nodular lymphocyte-predominant types, high cure rates, ABVD or BEACOPP chemotherapy, and PET-adapted treatment.
Hoechst AG
Hoechst AG, formerly Farbwerke Hoechst, was a German chemical and pharmaceutical company founded in 1863 near Frankfurt as a coal tar dye factory; it joined I. G. Farben, produced Salvarsan and Lasix, and merged into Aventis in 1999, later Sanofi.
Hoffmann's reflex
Hoffmann's reflex (Hoffmann sign, finger flexor reflex): bedside flick of the middle finger causing thumb and finger flexion, an upper-limb corticospinal tract sign; distinct from Paul Hoffmann's electrically evoked H-reflex.
Hogeweyk
De Hogeweyk, the original dementia village in Weesp, Netherlands, opened 2009: a gated nursing home where ~152 people with severe dementia live in lifestyle-matched shared houses with shops, pub, and theater; antipsychotic use reportedly fell to ~12%.
HOHO study
HOHO (Helping Ourselves, Helping Others), the Young Women's Breast Cancer Study (YWS), NCT01468246: prospective cohort of women diagnosed with breast cancer at age 40 or younger, with North American (1,302 women) and European IBCSG 43-09 (300 women) cohorts studying fertility, psychosocial, and treatment outcomes over 10 years.
Holding space
Holding space: supportive practice of non-judgmental, present listening without fixing or judging, rooted in Winnicott's holding environment and popularized by Heather Plett's 2015 blog; used in therapy, coaching, and care.
Holistic Health
Holistic health is an approach to health care that treats the person as a complete, integrated unit, addressing physical, mental, emotional, social, and spiritual dimensions together.
Holmes-Adie syndrome
Holmes-Adie syndrome, also called Adie syndrome or tonic pupil-tendon areflexia syndrome, is a benign disorder of ciliary ganglion denervation causing a tonic pupil with light-near dissociation plus absent tendon reflexes, described by Adie and Holmes in 1931.
Holmium laser enucleation of the prostate
Holmium laser enucleation of the prostate (HoLEP) is a transurethral operation for benign prostatic hyperplasia that peels the entire adenoma away and morcellates it, working for glands of any size.
Holoprosencephaly
Holoprosencephaly (HPE) is the most common human forebrain malformation, in which the cerebral hemispheres fail to separate. Alobar, semilobar, lobar, and MIH forms; SHH pathway disruption; about 1 in 10,000 live births.
Holoprosencephaly-postaxial polydactyly syndrome
Holoprosencephaly-postaxial polydactyly syndrome, or pseudotrisomy 13 (OMIM 264480, ORPHA:2166), is a rare autosomal recessive malformation syndrome with holoprosencephaly, postaxial polydactyly, severe facial anomalies, and a normal karyotype, mimicking trisomy 13.
Holoprosencephaly-radial heart renal anomalies syndrome
Holoprosencephaly-radial heart renal anomalies syndrome, or Steinfeld syndrome (OMIM 184705, ORPHA 3186), is a rare autosomal dominant disorder combining holoprosencephaly, radial limb defects, heart and kidney malformations, and absent gallbladder.
Holt-Oram syndrome
Holt-Oram syndrome (heart-hand syndrome type 1, HOS) is an autosomal dominant disorder caused by TBX5 mutations on 12q24.1, combining radial-ray upper-limb defects, septal heart defects, and cardiac conduction disease; prevalence about 1 per 100,000 births.
Holter monitor
Holter monitor: wearable ambulatory ECG device recording heart rhythm continuously for 24-48 hours; invented by Norman J. Holter in the 1950s, patented 1965, used to detect arrhythmias.
Home Care Services
Home Care Services: health and supportive care delivered at home, including skilled nursing, therapy, aide, and hospice services. Funded mainly by Medicaid (~40% of LTC spending) and Medicare's 60-day-episode home health PPS; distinct from institutional nursing home care.
Home Environment
Home Environment: the physical and social conditions of a dwelling affecting health, a 2022 MeSH term (D000091502) covering housing quality, living alone, hazards, and neighborhood context.
Home Health Aides
Home health aides (also home care aides, personal care aides) are supervised paraprofessional caregivers who assist elderly, disabled, and chronically ill clients with daily living and basic health tasks in the home; about 4.7 million U.S. jobs, median pay $35,800 (May 2025), 18% projected growth 2025-2035.
Home hemodialysis
Home hemodialysis is a renal replacement therapy in which a kidney failure patient performs dialysis at home on flexible schedules of two to seven sessions weekly.
Home Infusion Therapy
Home infusion therapy is the administration of medications, fluids, or nutrients in a patient's home, typically intravenously or subcutaneously, for infections, immune disorders, and cancer, often at lower cost than hospital care.
Home Nursing
Home nursing is skilled clinical nursing care delivered in a patient's home, distinct from aide-provided personal care; covered under Medicare with homebound criteria, measured by CMS star ratings, and supported by hospital-at-home evidence.
Home Parenteral Nutrition
Home total parenteral nutrition (HPN) delivers complete intravenous nutrition at home via a central catheter for chronic intestinal failure. Pioneered in the late 1960s by Scribner, Shils, and Dudrick; about 32,000 US users annually; survival depends on underlying disease.
Home spirometry
Home spirometry is forced expiratory lung function testing performed by patients at home with portable spirometers, mainly to monitor asthma, COPD, cystic fibrosis, and lung transplant function.
Homemaker Services
Homemaker services are non-medical assistance at home, such as meal preparation and bathing, delivered by trained aides to help ill, disabled, or recovering people manage daily living.
Homeopathic dilutions
Homeopathic dilutions (potentizations): serial 1:10 (X/D) or 1:100 (C) dilutions with succussion or trituration, introduced by Hahnemann; 12C is the Avogadro limit, 30C equals a 10^60 dilution, and no FDA-approved homeopathic product exists.
Homeopathy
Homeopathy: alternative medical system founded by Samuel Hahnemann in Germany around 1800, based on "like cures like" and extreme dilution; reviews find no reliable evidence of effectiveness and no FDA-approved homeopathic products exist.
Homeostatic model assessment
Homeostatic model assessment (HOMA) is a mathematical method that estimates insulin resistance and beta-cell function from a single fasting blood sample, widely used in diabetes research since 1985.