China 
Africa 
- Conjoint tendon
- Conjugate
- Conjugate eye deviation
- Conjugate gaze palsy
- Conjugate vaccine
- Conjugated estrogen
- Conjugated estrogens
- Conjugated fatty acids
- Conjugated linoleic acid
- Conjunctiva
- Conjunctival diseases
- Conjunctival flap
- Conjunctival hyperemia
- Conjunctival squamous cell carcinoma
- Conjunctival suffusion
- Conjunctivitis
- Conjunctivochalasis
- Conn's syndrome
- Connected health
- Connecting stalk
- Connectionism
- Connective tissue
- Connective tissue cells
- Connective tissue disease
- Connective tissue diseases
- Connective tissues
- Connectome
- Connectomics
- Connexin
- Connexin 32
- Connexin 43
- Connexins
- Connexons
- Connor-Davidson Resilience Scale
- Conoid ligament
- Conophylline
- Conotoxin
- Consanguinity
- Conscience
- Conscientiousness
- Conscious awareness
- Conscious mind
- Conscious sedation
- Consciousness
- Consensus sequences
- Consent
- Conservation of resources theory
- Conservative treatment
- Conserved Domain Database
- Conserved sequence
- Consideration of future consequences
- Consolidation
- Consonant
- Consonant clusters
- Conspicuous consumption
- Constant Routine Protocol
- Constipation
- Constipation in children
- Constitutional growth delay
- Constitutional symptoms
- Constitutive heterochromatin
- Constraint induced movement therapy
- Constraint-induced movement therapy
- Constraints
- Constriction
- Constrictive pericarditis
- Constructional apraxia
- Constructivism
- Constructs
- Consultant pharmacists
- Consumer
- Contact allergen
- Contact allergy
- Contact dermatitis
- Contact inhibition
- Contact lenses
- Contact order
- Contact tracing
- Contact urticaria
- Contact-dependent growth inhibition
- Contagious disease
- Contaminant
- Contaminated land
- Content
- Contentment
- Context dependent memory
- Context effect
- Context sensitive half life
- Context-dependent memory
- Context-sensitive half-life
- Contextual fear conditioning
- Contigs
- Contiguous gene syndrome
- Contingency management
- Contingent negative variation
- Continuant
- Continuing medical education
- Continuity of Care Record
- Continuous ambulatory peritoneal dialysis
- Continuous erythropoiesis receptor activator
- Continuous fever
- Continuous glucose monitoring
- Continuous infusion
- Continuous performance task
- Continuous performance test
- Continuous renal replacement therapy
- Continuous training
- Continuous wave laser
- Contraception
- Contraceptive device
- Contraceptive implant
- Contraceptive mandate
- Contraceptive patch
- Contraceptive vaginal ring
- Contractile proteins
- Contractility
- Contraction alkalosis
- Contraction band necrosis
- Contracture
- Contraindications
- Contralateral
- Contralateral brain
- Contrast
- Contrast agents
- Contrast induced nephropathy
- Contrast media
- Contrast radiography
- Contrast resolution
- Contrast sensitivity
- Contrast sensitivity function
- Contrast transfer function
- Contrast-enhanced ultrasound
- Contrast-induced nephropathy
- Contrecoup injury
- Control banding
- Controlled clinical trial
- Controlled drug delivery
- Controlled ovarian hyperstimulation
- Controlled release
- Controlling behavior
- Contusions
- Conus
- Conus arteriosus
- Conus medullaris
- Convalescence
- Convalescent plasma
- Conventional angiography
- Conventional insulin therapy
- Conventional insulinotherapy
- Conventional radiography