Campylobacteriosis@
Campylobacter Pylori@
Canavan Disease@
Cancer@
Candida@
Canker Sores@
Cardiomyopathy@
Carpal Tunnel Syndrome@
Cat-Scratch Disease@
Cataracts@
Causalgia@
Celiac Disease@
Celiac Sprue@
Central Auditory Processing Disorders@
Central Pontine Myelinolysis@
Cerebellar Diseases@
Cerebellar Vermis Agenesis@
Cerebral Abscess@
Cerebral Edema@
Cerebral Gigantism@
Cerebral Palsy@
Cerebrocostomandibular Syndrome@
Cerebrohepatorenal Syndrome@
Cerebrotendinous Xanthomatosis@
Cervical Cancer@
Cervical Dysplasia@
Cestodes@
Chagas Disease@
Charcot-Marie-Tooth Disease@
Chicken Pox@
Childhood Depression@
Chlamydia@
Cholera@
Cholesteatoma@

Cholesterol and Other Fats@
Chondromalacia@
Chromosomal Disorders@
Chromosome 5p-Syndrome@
Chronic Fatigue Syndrome@
Chronic Lymphocytic Leukemia@
Chronic Myelogenous Leukemia@
Chronic Obstructive Pulmonary Disease@
Chronic Progressive External Ophthalmoplegia@
Circulation Disorders@
Cirrhosis@
Cleft Lip and Palate@
Cleidocranial Dysplasia@
Clostridial Infections@
Clostridium difficile@
Clubfoot@
Coccidioidomycosis@
Cockayne Syndrome@
Coffin Lowry Syndrome@
Cold Sores@
Colibacillosis@
Colic@
Colitis@
Common Cold@
Communication Disorders@
Complex Regional Pain Syndromes@
Compulsive Gambling@
Congenital Amaurosis@
Congenital Arthromyodysplasia@
Congenital Facial Diplegia@
Congenital Heart Disease@
Congenital Nephroblastoma@
Congenital Pain Insensitivity@
Conjunctivitis@

Constipation@
Continuous Muscle Fiber Activity Syndrome@
Contraception@
Conversion Disorder@
Cornelia De Lange Syndrome@
Coronary Artery Disease@
Corticobasal Degeneration@
Cor Pulmonale@
Costello Syndrome@
Costochondritis@
Cowden Syndrome@
Craniofrontonasal Dysplasia@
Craniosynostosis@
Creutzfeldt Jakob Disease@
Crigler-Najjar Syndrome@
Cri du Chat Syndrome@
Crohn's Disease@
Crow-Fukase Syndrome@
Cryptorchidism@
Cryptosporidiosis@
Cubital Tunnel Syndrome@
Cushing's Syndrome@
Cyclic Vomiting Syndrome@
Cyclosporiasis@
Cyrptococcosis@
Cystathionine Beta-Synthase Deficiency Disease@
Cystic Fibrosis@
Cystic Hygroma@
Cystinosis@
Cystitis@
Cystocele@
Cytomegalovirus@