- Babesia divergens
- Babesia microti
- Babesiosis
- Bacillary dysentery
- Bacillus, drugs for
- Bacillus anthracis
- Bacillus cereus, acute diarrhea from
- Bacillus fragilis, intra-abdominal infection with
- Bacitracin 500 units/g ointment
- Back pain, low
- Bacteremia
- Bacterial overgrowth, small intestine
- Bacterial peritonitis, spontaneous
- Bacterial vaginosis
- Bacteroides
- Bactroban
- Bagassosis
- Balamuthia mandrillaris meningoencephalitis
- Balantidiasis
- Balantidium coli
- Baldness
- Barrier methods (contraception)
- Bartholin's duct cyst and abscess
- Bartonella henselae
- Basal cell carcinoma
- Basidia mucormycosis
- B cell tumors, hypoglycemia from
- BCNU (carmustine)
- Becker's muscular dystrophy
- Beclomethasone dipropionate
- Bed bug bites
- Bedsores
- Beef tapeworm
- Behcet's Syndrome
- Belascaris procyonis
- Belching
- Bell's palsy
- Belladonna poisoning
- Benazepril
- Benign lymphogranulomatosis
- Benign prostatic hyperplasia (BPH)
- Benign recurrent intrahepatic cholestasis
- Benign teratomas
- Benzamycin
- Benzeclin
- Benzene poisoning
- Benzisothiazolyl piperazine
- Benzisoxazole
- Benzodiazepines
- Benzoyl peroxide/clindamycin
- Benzoyl peroxide/erythromycin
- Berger's disease
- Bernard-Soulier syndrome
- Berry aneurysms
- Berylliosis
- Beta-2 agonists, for asthma
- Beta-adrenergic blocking agents (beta-blockers)
- Betagan
- Beta-glucocerebrosidase deficiency
- Betamethasone dipropionate
- Beta particles, radiation reactions from
- Beta-thalassemia
- Betaxolol
- Betaxolol HCl 0.25% solution
- Betaxolol HCl 0.5% solution
- Betimol
- Betoptic
- Betoptic S
- Bextra
- Bexxar
- Bicalutamide
- Bicarbonate, for hyperkalemia
- Biguanides
- Bile ducts
- Biliary cirrhosis, primary
- Biliary obstruction
- Biliary stricture
- Biliary tract carcinoma
- Biliary tract diseases
- Bilirubin
- Bimatoprost 0.003% solution
- Binge eating
- Biologic response modifiers
- Bipolar disorder
- Bird fancier's lung
- Bird mites
- Birth control pills
- Bismuth subsalicylate
- Bisoprolol, and hydrochlorothiazide
- Bitemporal hemianopsia
- Bites
- Bitolterol
- Black widow spider bites
- Bladder cancer
- Blastomycosis
- Bleeding
- Bleeding, general approach
- Bleomycin
- Blepharitis
- Blistering diseases (bullae)
- Blisters (bullae)
- Blocadren
- Block
- Blood pressure
- Blood sugar, low
- Body lice
- Boeck sarcoid
- Boils
- Boletus poisoning
- Bone
- Bone density, decreased
- Bone marrow transplant, prevention regimens for infection from
- Bone pain & pathologic fractures
- Bone tumors
- Bone tumors & tumor-Like lesions
- BOOP (bronchiolitis obliterans and organizing pneumonia)
- Borderline disorder
- Bordetella pertussis
- Borrelia burgdorferi infection
- Borrelia recurrentis
- Bortezomib
- Botulism
- BPH
- Brachial plexus neuropathy
- Bradycardia, relative
- Bradycardias
- Brain abscess
- Brain death
- Brain mass
- Brain mass, AIDS
- Brain mass in HIV/AIDS
- Brain metastases
- Brain stem glioma
- Brain tumor, primary
- Brain tumors (brain mass)
- Breast
- Breast abscess
- Breast augmentation disorders
- Breast cancer
- Breast enlargement, male
- Breast fat necrosis
- Breast-feeding women, drugs and substances to assess in
- Breast fibroadenoma
- Breast fibrocystic disease
- Breast lump or mass
- Breast pain
- Brenner tumor
- Brethine
- Bretylium
- Brevibloc
- Brill's disease
- Brimonidine tartrate 0.2% solution
- Brinzolamide 1% suspension
- Bromocriptine, in breast-feeding women
- Bronchial carcinoid tumors
- Bronchial obstruction
- Bronchiectasis
- Bronchiolitis Obliterans & Organizing Pneumonia
- Bronchitis, acute
- Bronchitis, chronic
- Bronchogenic carcinoma
- Brown recluse spider bite
- Brown spider bites
- Brucella abortus
- Brucella melitensis
- Brucella suis
- Brucellosis
- Brugia malayi
- Brugia timori
- Bruising, easy
- Bruit
- Budd-Chiari syndrome
- Budesonide
- Buerger's disease
- Bulbar palsy, progressive
- Bulimia nervosa
- Bullous eruptions/lesions (bullae)
- Bullous pemphigoid
- Bumetanide
- Bumex
- BUN increased with normal GFR
- Bupropion
- Bupropion SR
- Burkholderia cepacia, in cystic fibrosis
- Burkholderia mallei, drugs for
- Burkholderia pseudomallei, drugs for
- Burkitt's lymphoma
- Burns
- Bursitis
- Bursitis, anserine
- Buspar
- Buspirone
- Busulfan
- Butenafine
- Butyrophenone