Curious about a health topic? From Achilles tendon to Wilson's disease and everything in between, we provide information on a variety of topics that concern us all.

• C. difficile
• Cancer
• Canker sore
• Carbon monoxide poisoning
• Carcinoid syndrome
• Carcinoid tumors
• Cardiogenic shock
• Cardiomyopathy
• Carotid artery disease
• Carpal tunnel syndrome
• Castleman disease
• Cataracts
• Catatonic schizophrenia
• Cavities/tooth decay
• Celiac disease
• Cellulite
• Cellulitis
• Central sleep apnea
• Cerebral palsy
• Cervical dystonia
• Cervical spondylosis
• Cervicitis
• Chagas disease
• Charcot-Marie-Tooth disease
• Chemo brain
• Chest pain
• Chickenpox
• Chilblains
• Child abuse
• Childhood asthma
• Childhood disintegrative disorder
• Childhood obesity
• Childhood schizophrenia
• Chlamydia
• Cholecystitis
• Cholera
• Cholestasis of pregnancy
• Chondromalacia patella
• Chronic cough
• Chronic daily headaches
• Chronic exertional compartment syndrome
• Chronic fatigue syndrome
• Chronic hives (urticaria)
• Chronic kidney failure
• Chronic lymphocytic leukemia
• Chronic myelogenous leukemia
• Chronic pelvic pain
• Chronic sinusitis
• Churg-Strauss syndrome
• Cirrhosis
• Claudication
• Cleft lip and cleft palate
• Clubfoot
• Cluster headache
• Coarctation of the aorta
• Cold sore
• Cold urticaria
• Colic
• Collagenous colitis, lymphocytic colitis
• Colon cancer
• Colon polyps
• Coma
• Common cold
• Common cold in babies
• Common warts
• Complex regional pain syndrome
• Complicated grief
• Compulsive gambling
• Compulsive sexual behavior
• Concussion
• Congenital adrenal hyperplasia
• Congenital heart defects in children
• Congenital heart disease in adults
• Conjoined twins
• Constipation
• Constipation in children
• Contact dermatitis
• Convergence insufficiency
• Conversion disorder
• COPD
• Corns and calluses
• Coronary artery disease
• Costochondritis
• Cough headaches
• Cradle cap
• Craniosynostosis
• Creutzfeldt-Jakob disease
• Crohn's disease
• Croup
• Cryptosporidium infection
• Cushing's syndrome
• Cyclic vomiting syndrome
• Cyclospora infection
• Cyclothymia (cyclothymic disorder)
• Cystic fibrosis
• Cystitis
• Cystocele
• Cytomegalovirus (CMV) infection