C. diff (Clostridioides difficile) Infection
Cachexia (Wasting Syndrome)
Cacophobia (Fear of Ugliness)
CAD: Bifurcation Blockage
CAD: In-Stent Restenosis
Café-au-Lait Spots
Calcaneal Stress Fracture
Calcific Tendonitis
Calciphylaxis
Calcium Deposits
Calf Muscle Pain
Canaliculitis
Canavan Disease
Cancer
Cancer Cachexia
Cancer Fatigue
Cancer Pain
Cancer Recurrence
Cancer Screening
Cancerous Polyps
Candida Auris
Candida Parapsilosis
Candidiasis
Canker Sores
Cannabis Hyperemesis Syndrome (CHS)
Capillary Leak Syndrome
Caput Succedaneum
Car Seat Safety
Carbapenem-Resistant Enterobacterales (CREs)
Carbon Monoxide Poisoning
Carcinoid Syndrome
Carcinomatosis (Carcinosis)
Cardiac Amyloidosis
Cardiac Angiosarcoma
Cardiac Arrest
Cardiac Asthma
Cardiac Cachexia
Cardiac Rhabdomyoma
Cardiac Sarcoidosis
Cardiac Tamponade
Cardiac Tumor
Cardiofaciocutaneous Syndrome
Cardiogenic Pulmonary Edema
Cardiogenic Shock
Cardiomyopathy
Cardiophobia
Cardiorenal Syndrome
Cardiovascular Disease
Cardiovascular-Kidney-Metabolic (CKM) Syndrome
Caring for Children’s Teeth
Carney Complex
Carotid Artery Aneurysm
Carotid Artery Disease (Carotid Artery Stenosis)
Carotid Body Tumors
Carotid Bruit
Carpal Boss
Carpal Tunnel Syndrome
Carpenter Syndrome
Caseous Necrosis
Castleman Disease
Cat Scratch Fever
Cataplexy
Cataracts
Catatonia
Catatonic Schizophrenia
Catecholaminergic Polymorphic Ventricular Tachycardia
Cauda Equina Syndrome
Caudal Regression Syndrome
Cauliflower Ear
Cavernous Hemangioma
Cavernous Sinus Thrombosis
Cavities
Cedar Fever
Celiac Disease
Cellular Dermatofibroma
Cellulite
Cellulitis
Central Cord Syndrome (CCS)
Central Diabetes Insipidus (CDI)
Central Nervous System Vasculitis
Central Pain Syndrome
Central Pontine Myelinolysis (Osmotic Demyelination Syndrome)
Central Serous Retinopathy
Central Sleep Apnea
Cephalic Disorders
Cephalohematoma
Cephalopelvic Disproportion
Cerebellar Degeneration
Cerebral Amyloid Angiopathy
Cerebral Edema (Brain Swelling)
Cerebral Hypoxia
Cerebral Palsy
Cerebral Venous Sinus Thrombosis
Cerebrospinal Fluid (CSF) Leak
Cerebrovascular Disease
Cerebrovascular Occlusive Disease
Cervical Artery Dissection
Cervical Cancer
Cervical Cap
Cervical Dysplasia
Cervical Dystonia
Cervical Ectropion
Cervical Kyphosis
Cervical Polyp
Cervical Radiculopathy (Pinched Nerve)
Cervical Spondylosis
Cervical Vertigo
Cervicitis
Chagas Disease
Chalazion
Chancroid (Soft Chancre)
Chapped Lips
Charcot Foot
Charcot-Marie-Tooth Disease (CMT)
CHARGE Syndrome
Charles Bonnet Syndrome
Chauffeur Fracture (Radial Styloid Fracture)
Chemical Burns
Chemical Pregnancy
Chemosis
Chemotherapy
Cherry Angioma
Cherubism
Chest Pain
Chest Pressure
Chest Wall Tumor
Chiari Malformation
Chickenpox
Chickpea Allergy
Chigger Bites
Chikungunya
Chilblain Lupus
Chilblains (Pernio)
Child Abuse
Childhood Apraxia of Speech
Childhood Asthma
Childhood Cancer (Pediatric Cancer)
Childhood Immunization Schedule
Childhood Non-Hodgkin’s Lymphoma
Childhood Obesity
Childhood Schizophrenia
Chills
Chionophobia (Fear of Snow)
Chipped Tooth
Chiropractic Adjustment
Chlamydia
Choanal Atresia
Cholangiocarcinoma (Bile Duct Cancer)
Cholangitis
Cholecystitis (Gallbladder Inflammation)
Choledocholithiasis
Cholera
Cholesteatoma
Cholesterol and Nutrition
Cholesterol Emboli
Cholinergic Urticaria
Chondroblastoma
Chondrosarcoma
Chordoma
Chorea
Chorioamnionitis
Choriocarcinoma
Chorioretinitis
Choroideremia
Christianson Syndrome
Chromophobia (Fear of Colors)
Chronic Bronchitis
Chronic Cough
Chronic Diarrhea
Chronic Granulomatous Disease (CGD)
Chronic Hives (Chronic Idiopathic Urticaria)
Chronic Illness
Chronic Kidney Disease
Chronic Lymphocytic Leukemia (CLL)
Chronic Migraine
Chronic Myeloid Leukemia (CML)
Chronic Obstructive Pulmonary Disease (COPD)
Chronic Pain
Chronic Pharyngitis
Chronic Sinusitis
Chronic Thromboembolic Pulmonary Hypertension (CTEPH)
Chronic Total Occlusion
Chronic Traumatic Encephalopathy (CTE)
Chronic Venous Insufficiency (CVI)
Chronophobia (Fear of Time)
Chyle Leak
Chylothorax
Chyluria
CIDP (Chronic Inflammatory Demyelinating Polyneuropathy)
Circadian Rhythm Sleep Disorders
Circulatory System Diseases
Circumcision & Revision
Cirrhosis of the Liver
Claudication
Claustrophobia (Fear of Enclosed Spaces)
Claw Hand
Claw Toes
Clear Braces
Clear Cell Renal Cell Carcinoma
Clear Cell Sarcoma
Cleft Lip/Cleft Palate
Cleidocranial Dysplasia
Clinical Depression (Major Depressive Disorder)
Clinodactyly
Clitoral Hood Reduction
Clitoris Pain (Clitorodynia)
Cloacal Exstrophy
Cloacal Malformations
Clogged Milk Duct
Clogged Pores
Clonus
Cloudy Urine
Clubbed Fingers
Clubfoot
Cluster Headaches
CNS Lymphoma
Coagulative Necrosis
Cochlear Implants
Cockayne Syndrome
Cockroach Allergy
Cognitive Behavioral Therapy (CBT)
Cold Agglutinin Disease
Cold Feet
Cold Hands
Cold Sores
Cold Urticaria
Colic
Colitis
Collagen Vascular Disease
Colles Fracture
Coloboma
Colon Polyps
Colon Spasms
Color Blindness & Test
Colorectal Cancer (Colon Cancer)
Colpocephaly
Coma (Persistent Vegetative State)
Comminuted Fracture
Common Age-Related Eye Problems
Common Cold
Common Variable Immunodeficiency (CVID)
Commotio Cordis
Communicating Hydrocele
Compartment Syndrome
Complement 3 Glomerulopathy (C3G)
Complex Lymphatic Anomalies (Lymphangiomatosis)
Complex Regional Pain Syndrome (CRPS)
Complicated Grief
Compound Fracture
Comprehensive Metabolic Panel (CMP)
Compression Fractures
Computer Vision Syndrome
Conception
Concussion
Condoms
Conduct Disorder
Condylar Resorption
Confusion
Congenital Adrenal Hyperplasia
Congenital Central Hypoventilation Syndrome (CCHS)
Congenital Diaphragmatic Hernia
Congenital Hand Differences
Congenital Heart Disease
Congenital Muscular Dystrophy (CMD)
Congenital Myasthenic Syndrome
Congenital Myopathy
Congenital Penile Curvature
Congenital Rubella Syndrome
Congenital Urinary Abnormalities
Congestive Heart Failure
Conjunctivitis
Conjunctival Cyst
Conjunctival Melanoma
Connective Tissue Diseases
Constipation
Constrictive Pericarditis
Contact Dermatitis
Contraception Myths
Convergence Insufficiency
Conversion Disorder
Cor Pulmonale (Right-Sided Heart Failure)
Cord Blood Banking
Corneal Abrasion
Corneal Disease
Corneal Ectasia
Corneal Edema
Corneal Flash Burns
Corneal Hydrops
Corneal Ulcer
Cornelia de Lange Syndrome
Corns and Calluses
Coronary Artery Calcification
Coronary Artery Disease
Coronary Artery Spasm
Coronavirus, COVID-19
Corpus Luteum Cyst
Corticobasal Degeneration
Costello Syndrome
Costochondritis
Cough
Cough-Variant Asthma
Coulrophobia (Fear of Clowns)
Cowden Syndrome
CPR
Cracked Tooth (Fractured Tooth)
Cradle Cap
Craniopharyngioma
Craniosynostosis
Creutzfeldt-Jakob Disease (CJD)
Cri du Chat Syndrome
Cribriform Hymen
Cricopharyngeal Spasm
Crigler-Najjar Syndrome
Critical Limb Ischemia
Crohn’s Disease
Croup
Crouzon Syndrome
Crow’s Feet (Lateral Canthal Lines)
Cryoglobulinemia
Cryptic Pregnancy
Cryptococcosis
Cryptogenic Organizing Pneumonia
Cryptosporidiosis
Crystals in Urine
C-Section
Cubital Tunnel Syndrome
Cushing Syndrome
Cutaneous B-Cell Lymphoma
Cutaneous Lupus (Skin Lupus)
Cutaneous T-Cell Lymphoma
Cyanosis
Cyanotic Heart Disease
Cyberphobia (Fear of Computers)
Cyclic Neutropenia
Cyclic Vomiting Syndrome
Cyclosporiasis
Cyclothymia
Cynophobia (Fear of Dogs)
Cyst on Penis
Cystic Acne
Cystic Fibrosis
Cystic Hygroma
Cystic Kidney Disease
Cysticercosis
Cystine Stones
Cystinosis
Cystocele (Fallen Bladder)
Cystoid Macular Edema
Cystolitholapaxy
Cytokine Release Syndrome (CRS)
Cytomegalovirus (CMV)
Cytopenia