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Beautiful Boy: A Father's Journey Through His Son's Addiction
Beautiful Boy: A Father's Journey Through His Son's Addiction is David Sheff's 2007 memoir of his son Nic's methamphetamine addiction, companion to Nic's Tweak and basis of the 2018 film with Steve Carell and Timothee Chalamet.
Beauty mark
Beauty mark: cultural term for an attractive small facial mole, medically a nevus (melanocytic nevus). Includes artificial mouches worn in 17th-18th century Europe and Marilyn Monroe's 1950s icon; ABCDE rule flags dangerous change.
Becaplermin
Becaplermin (Regranex) is a topical recombinant human PDGF-BB gel, FDA approved in 1997, the only drug approved for diabetic foot ulcers; modest healing benefit, cancer-mortality signal investigated and not confirmed.
Becatecarin
Becatecarin, also known as XL119, is a synthetic antineoplastic analog of the antibiotic rebeccamycin that intercalates into DNA and inhibits topoisomerase enzymes, and was studied against biliary tract cancer.
Beck Depression Inventory
Beck Depression Inventory (BDI, BDI-II): 21-item copyrighted self-report scale measuring depression severity, created by Aaron T. Beck in 1961, revised 1978 and 1996; scores 0–63 with setting-dependent cut points.
Beck's triad (cardiology)
Beck's triad: hypotension, elevated jugular venous pressure, and muffled heart sounds described by Claude Beck in 1935, the classic but insensitive bedside sign of acute cardiac tamponade.
Becker muscular dystrophy
Becker muscular dystrophy (BMD), also called Becker's dystrophy or benign pseudohypertrophic muscular dystrophy, is an X-linked dystrophinopathy from in-frame DMD gene deletions causing reduced, partially functional dystrophin; milder and slower than Duchenne, with variable onset, cardiac involvement, and no FDA-approved BMD-specific therapy.
Becker nevus syndrome
Becker nevus syndrome (BNS), a rare epidermal nevus syndrome named by Happle and Koopman in 1997, combines a Becker nevus with ipsilateral breast hypoplasia, muscle, or skeletal defects, caused by postzygotic ACTB mutations.
Beckwith–Wiedemann syndrome
Beckwith–Wiedemann syndrome (BWS, OMIM #130650), also called Beckwith–Wiedemann spectrum (BWSp), is an 11p15.5 imprinting disorder causing overgrowth, macroglossia, neonatal hypoglycemia, and embryonal tumor risk that varies by molecular subgroup, from 2.6% (IC2) to 28% (IC1).
Beclabuvir
Beclabuvir (BMS-791325), a non-nucleoside allosteric inhibitor of HCV NS5B polymerase (Thumb 1 site), developed by Bristol-Myers Squibb; approved in Japan as Ximency with daclatasvir and asunaprevir for genotype 1 hepatitis C.
Beclobrate
Beclobrate (CAS 55937-99-0), a clofibrate-analog fibric acid derivative antihyperlipidemic introduced in 1985; lowered LDL-C and triglycerides at 100 mg once daily; withdrawn in Switzerland in 1990 after fatal hepatitis reports.
Becotatug vedotin
Becotatug vedotin (MRG003, MEIYOUHENG) is an EGFR-targeted antibody-drug conjugate of JMT101 plus MMAE, approved in China in 2025 for recurrent/metastatic nasopharyngeal carcinoma, with phase IIa ORR 42%.
Bed Rest
Bed rest (bedrest, MeSH D001510) is confinement to bed for therapeutic or experimental reasons. Once routinely prescribed, trials show it causes muscle and bone loss and is often ineffective or harmful; early mobilization is now favored.
Bedside echocardiography
Bedside echocardiography is a focused cardiac ultrasound performed by the treating clinician at the point of care to quickly assess pericardial effusion, heart function, and volume status.
Beers criteria
The Beers criteria are an updated list of potentially inappropriate medications for older adults, created by geriatrician Mark H. Beers in 1991 and now maintained by the American Geriatrics Society.
Before I Go to Sleep (film)
Before I Go to Sleep is a 2014 psychological thriller directed by Rowan Joffé, adapted from S.J. Watson's bestselling amnesia novel, starring Nicole Kidman, Colin Firth, and Mark Strong; it grossed $3.2 million in the US and scored 37% on Rotten Tomatoes.
Befotertinib mesylate
Befotertinib mesylate (赛美纳, D-0316/BPI-D0316) is a third-generation EGFR-TKI by Betta Pharmaceuticals for EGFR-mutated NSCLC; NMPA approved it second-line (May 2023, T790M) and first-line (October 2023), with phase 3 PFS 22.1 vs 13.8 months versus icotinib.
Begelomab
Begelomab (Begedina, BT 5/9, SAND-26) is a murine IgG2b monoclonal antibody against CD26/DPP4 developed by ADIENNE for steroid-refractory acute graft-versus-host disease; its EU marketing application was withdrawn in 2016 and its phase 3 trial terminated.
Behavior change technique
A behavior change technique (BCT) is an observable, replicable "active ingredient" of an intervention designed to change behavior, such as self-monitoring, goal setting, or reinforcement.
Behavior Control
Behavior control, also called behavioral manipulation, is the manipulation of the behavior of people or animals by biomedical, physical, psychological, or social means, including for nontherapeutic reasons.
Behavior Rating Inventory of Executive Function
The Behavior Rating Inventory of Executive Function (BRIEF) is a family of parent, teacher, and self-report questionnaires rating everyday executive function behaviors, first published in 2000 by Gerard Gioia and colleagues.
Behavior therapy
Behavior therapy is a class of psychotherapies applying learning principles such as classical and operant conditioning to change maladaptive behaviors, with variants including systematic desensitization and flooding.
Behavioral activation
Behavioral activation is a brief, structured psychotherapy for depression in which patients schedule value-driven activities to reduce avoidance; trials find it comparable to medication and cognitive therapy.
Behavioral medicine
Behavioral medicine is an interdisciplinary field, defined at Yale in 1977, that integrates behavioral and biomedical science for the prevention, diagnosis, treatment, and rehabilitation of illness.
Behavioral neuroscience
Behavioral neuroscience, also known as biological psychology or biopsychology, is the branch of neuroscience studying how the nervous system produces behavior, emotions, and mental processes, largely through experiments with laboratory animals.
Behavioral variant of frontotemporal dementia
Behavioral variant frontotemporal dementia (bvFTD), a frontotemporal dementia subtype with disinhibition, apathy, and executive decline, onset around age 58, often misdiagnosed as psychiatric illness, linked to MAPT, GRN, and C9orf72 genes.
Behaviour change technique
A behavior change technique is an observable, replicable active ingredient of an intervention designed to change behavior, classified by the 2013 BCTTv1 taxonomy of 93 techniques in 16 clusters.
Behaviour therapy
Behaviour therapy, also called behavioral psychotherapy, is a family of psychological treatments that applies classical and operant conditioning to reduce maladaptive behavior, emerging in the 1950s.
Behavioural pharmacology
Behavioral pharmacology, also spelled behavioural pharmacology, studies how drugs alter behavior using the methods of psychology; it emerged as a distinct discipline in the 1950s.
Behçet's disease
Behçet's disease, also called Behçet's syndrome or Silk Road disease, is a rare chronic relapsing vasculitis causing recurrent oral and genital ulcers, uveitis, and skin lesions, strongly associated with HLA-B51 and treated with corticosteroids, colchicine, and TNF inhibitors.