107 Diseases That Start With The Letter C

Have you ever wondered about diseases that start with the letter “C”? Wonder no more, this article is exactly what you are looking for.

In this article, I will dive into the realm of some known and lesser-known diseases beginning with this enigmatic letter C, aiming to raise awareness and understanding.

So, without any further ado, let’s embark on this fascinating journey and broaden our understanding of diseases that start with the letter C.


Diseases That Start With C

The followings are some known and lesser-known diseases that begin with the letter C (In alphabetical order):

1. Campylobacteriosis: Campylobacteriosis is a common bacterial infection caused by Campylobacter bacteria. It is often transmitted through contaminated food, leading to gastrointestinal symptoms like diarrhea and abdominal pain. Hydration and rest are important for recovery.

2. Cancer: Cancer refers to a group of diseases characterized by uncontrolled cell growth and can affect various organs and tissues. Treatment options for cancer include surgery, chemotherapy, radiation therapy, immunotherapy, and targeted therapies.

3. Candidiasis: Candidiasis is a fungal infection caused by the Candida species, commonly affecting the skin, mouth (oral thrush), or genitals (vaginal yeast infection). Antifungal medications are used for treatment.

4. Capillary Malformations: Capillary malformations, also known as port-wine stains, are birthmarks caused by an overabundance of capillaries in the skin. Laser therapy can help improve the appearance of these birthmarks.

5. Carcinoid Syndrome and Carcinoid Tumours: Carcinoid syndrome is a group of symptoms caused by carcinoid tumors, which are slow-growing neuroendocrine tumors. Treatment depends on the size and location of the tumor and may involve surgery, medications, or other interventions.

6. Cardiac Arrest: Cardiac arrest is a medical emergency where the heart suddenly stops beating, requiring immediate cardiopulmonary resuscitation (CPR) and defibrillation to restore normal heart rhythm.

7. Cardiomyopathy: Cardiomyopathy refers to diseases of the heart muscle, leading to weakened heart function. Treatment may involve medications, lifestyle changes, and, in severe cases, heart transplant.

8. Carpal Tunnel Syndrome: Carpal tunnel syndrome is a condition caused by compression of the median nerve in the wrist, leading to hand pain, numbness, and weakness. Rest, wrist splints, and sometimes surgery are used for management.

9. Cat Scratch Disease: Cat scratch disease is a bacterial infection transmitted by cat scratches or bites. Most cases resolve on their own, but antibiotics may be prescribed for severe infections.

10. Catarrh: Catarrh is a term used to describe excessive mucus in the respiratory tract, often associated with colds or allergies. Symptomatic relief and treating the underlying cause are important for management.

11. Cavernous Malformations: Cavernous malformations are abnormal clusters of blood vessels in the brain or spinal cord, which can cause neurological symptoms. Treatment depends on the location and size of the malformation.

12. Cavus Foot: Cavus foot is a condition where the arch of the foot is unusually high, leading to foot pain and instability. Orthotic devices and physical therapy can help manage symptoms.

13. Celiac Disease: Celiac disease is an autoimmune disorder triggered by gluten consumption, leading to damage to the small intestine. A strict gluten-free diet is the only treatment for celiac disease.

14. Cellulitis: Cellulitis is a bacterial skin infection causing redness, swelling, and warmth. Antibiotics are used for treatment, and prompt medical attention is crucial to prevent complications.

15. Central Sleep Apnea: Central sleep apnea is a sleep disorder characterized by pauses in breathing during sleep due to a lack of respiratory effort. Treatment options include positive airway pressure therapy and medications.

16. Cerebral Aneurysm: A cerebral aneurysm is a weak spot in a brain artery that can rupture, causing a potentially life-threatening hemorrhagic stroke. Treatment may involve surgery or endovascular procedures.

17. Cerebral Palsy: Cerebral palsy is a group of movement disorders caused by brain damage that occurs before or during birth. Management includes physical therapy, assistive devices, and medications to alleviate symptoms.

18. Cerebrovascular Disease: Cerebrovascular disease encompasses various conditions affecting the blood vessels supplying the brain, such as stroke and transient ischemic attack (TIA). Lifestyle modifications and medications are essential for prevention and treatment.

19. Cervical Cancer: Cervical cancer is cancer that develops in the cervix, and regular screening with Pap tests is crucial for early detection. Treatment options include surgery, radiation, and chemotherapy.

20. Cervical Dysplasia: Cervical dysplasia is a precancerous condition where abnormal cells are found on the cervix. Monitoring and treatment are important to prevent the development of cervical cancer.

21. Chagas Disease: Chagas disease, or American trypanosomiasis, is a parasitic infection transmitted by triatomine bugs. Antiparasitic medications are used for treatment, and early detection is vital to prevent complications.

22. Charcot-Marie-Tooth disease (CMT): Charcot-Marie-Tooth disease is a hereditary neurological disorder affecting the peripheral nerves, leading to muscle weakness and sensory loss. Management focuses on physical therapy and orthotic devices to improve mobility.

23. Chemotherapy: Chemotherapy is a cancer treatment that uses drugs to kill or slow the growth of cancer cells. It is often used in combination with other therapies.

24. Chest Infection: A chest infection can involve the lungs (pneumonia) or airways (bronchitis) and can be caused by viruses or bacteria. Treatment depends on the cause and severity of the infection.

25. Chest Pain: Chest pain can be a symptom of various conditions, ranging from minor muscle strain to life-threatening heart attack. Prompt medical evaluation is essential to determine the cause and provide appropriate treatment.

26. Chiari Malformation: Chiari malformation is a structural defect in the brain, where the lower part of the cerebellum extends into the spinal canal. Surgery may be required to relieve symptoms and prevent complications.

27. Chickenpox: Chickenpox is a highly contagious viral infection caused by the varicella-zoster virus. Symptomatic relief and antiviral medications may be prescribed for severe cases.

28. Chikungunya: Chikungunya is a viral infection transmitted by mosquitoes, leading to fever and joint pain. Supportive care and medications are used for symptom management.

29. Chilblains: Chilblains are painful skin inflammation caused by exposure to cold temperatures. Keeping the affected areas warm and protected is essential for healing.

30. Chlamydia: Chlamydia is a common sexually transmitted infection (STI) caused by the bacterium Chlamydia trachomatis. Antibiotics are used for treatment.

31. Choledochal Cyst: Choledochal cysts are fluid-filled sacs in the bile ducts, which may require surgical removal to prevent complications.

32. Cholera: Cholera is a severe bacterial infection causing profuse diarrhea and dehydration. Prompt rehydration and antibiotics are essential for treatment.

33. Chondromalacia Patellae: Chondromalacia patellae, also known as runner’s knee, is the softening and degeneration of the cartilage on the underside of the kneecap. Physical therapy and rest are often prescribed for management.

34. Chorea: Chorea is a neurological disorder characterized by involuntary, jerky movements. Treatment aims to manage symptoms and may involve medications.

35. Chronic Back Pain: Chronic back pain is persistent pain in the back that lasts for more than three months. Management includes physical therapy, pain medications, and lifestyle adjustments.

36. Chronic Bronchitis: Chronic bronchitis is a type of chronic obstructive pulmonary disease (COPD) characterized by a persistent cough and mucus production. Quitting smoking and medication management are crucial for symptom control.

37. Chronic Cough: A chronic cough is a persistent cough lasting for more than eight weeks and may require medical evaluation to determine the underlying cause and appropriate treatment.

38. Chronic Fatigue Syndrome (CFS): Chronic fatigue syndrome, also known as myalgic encephalomyelitis (ME), is a complex disorder characterized by profound fatigue and other symptoms. Management focuses on symptom relief and lifestyle adjustments.

39. Chronic Kidney Disease (CKD): Chronic kidney disease is the gradual loss of kidney function over time. Treatment aims to slow disease progression and manage complications.

40. Chronic Lymphocytic Leukemia: Chronic lymphocytic leukemia (CLL) is a type of blood cancer affecting lymphocytes. Treatment options depend on the stage and progression of the disease.

41. Chronic Myeloid Leukemia (CML): Chronic myeloid leukemia is a type of blood cancer affecting myeloid cells. Targeted therapy is the mainstay of treatment for CML.

42. Chronic Obstructive Pulmonary Disease (COPD): COPD is a progressive lung disease causing breathing difficulties. Management involves smoking cessation, medication, and pulmonary rehabilitation.

43. Chronic Pain: Chronic pain refers to persistent pain lasting for more than three months. Multimodal pain management, including medications, physical therapy, and psychological support, is often necessary for relief.

44. Chronic Pancreatitis: Chronic pancreatitis is inflammation of the pancreas that does not improve over time. Treatment aims to manage pain and improve digestion.

45. Chronic Recurrent Multifocal Osteomyelitis: Chronic recurrent multifocal osteomyelitis (CRMO) is a rare condition causing recurrent bone inflammation. Treatment focuses on managing symptoms and inflammation.

46. Ciguatera Fish Poisoning (CFP): Ciguatera fish poisoning is a type of food poisoning caused by eating fish contaminated with ciguatoxin. There is no specific treatment, and supportive care is given for symptom relief.

47. Circumcision Problems: Circumcision problems refer to complications or issues related to circumcision, such as infection or excessive bleeding. Prompt medical attention may be necessary for treatment.

48. Cirrhosis: Cirrhosis is the late stage of scarring (fibrosis) of the liver caused by many forms of liver diseases and conditions, such as hepatitis and chronic alcoholism. Lifestyle changes and medical management are essential for cirrhosis management.

49. Cleft Lip and Cleft Palate: Cleft lip and cleft palate are birth defects where there are gaps or splits in the upper lip and/or roof of the mouth. Surgical repair is typically performed early in life to improve feeding and speech.

50. Clostridium Difficile Infection: Clostridium difficile infection (CDI) is a bacterial infection of the colon often associated with antibiotic use. Discontinuing the triggering antibiotics and using specific antibiotics for CDI are common treatments.

51. Clubfoot: Clubfoot is a congenital condition where a baby’s foot is twisted out of shape or position. Treatment usually involves a series of casts, braces, or corrective surgery.

52. Coarctation of the Aorta: Coarctation of the aorta is a congenital heart defect characterized by a narrowing of the aorta. Treatment often involves surgery to repair the narrowing.

53. Coccidioidal Meningitis: Coccidioidal meningitis is a severe fungal infection affecting the lining of the brain and spinal cord. Antifungal medications are used for treatment.

54. Coccidioidomycosis: Coccidioidomycosis, also known as Valley fever, is a fungal infection caused by inhaling spores from the soil. Most cases resolve on their own, but antifungal medications may be prescribed for severe infections.

55. Coeliac Disease: As mentioned earlier, coeliac disease is an autoimmune disorder triggered by gluten consumption, leading to damage to the small intestine. A strict gluten-free diet is the only treatment for coeliac disease.

56. Cold Sore: Cold sores, also known as fever blisters, are painful fluid-filled blisters caused by the herpes simplex virus. Antiviral medications and topical creams are used for treatment.

57. Cold Symptoms: Cold symptoms, also known as the common cold, are caused by various viruses and can include a runny nose, cough, and sore throat. Rest and symptomatic relief are recommended for recovery.

58. Colds: Colds refer to common viral infections that affect the upper respiratory tract. Adequate rest, hydration, and symptom management are crucial for recovery.

59. Colitis: Colitis refers to inflammation of the colon and can be caused by various conditions, including inflammatory bowel disease (IBD). Treatment depends on the underlying cause.

60. Coma: A coma is a state of prolonged unconsciousness where a person cannot be awakened and does not respond to stimuli. The underlying cause of the coma will determine treatment options.

61. Common Cold: As mentioned earlier, the common cold is a viral infection affecting the upper respiratory tract, leading to symptoms like a runny nose and sore throat. Rest and symptomatic relief are recommended for recovery.

62. Common Heart Conditions: Common heart conditions encompass a wide range of cardiovascular disorders, including coronary artery disease, heart failure, and arrhythmias. Management depends on the specific condition and may include lifestyle changes, medications, or surgery.

63. Common Wart: Common warts are skin growths caused by the human papillomavirus (HPV). Over-the-counter treatments or medical procedures may be used for wart removal.

64. Concussion: A concussion is a mild traumatic brain injury that can result from a blow or jolt to the head. Rest and gradual return to activities are essential for recovery.

65. Congenital Adrenal Hyperplasia: Congenital adrenal hyperplasia is a genetic disorder affecting the adrenal glands’ hormone production. Management involves hormone replacement therapy to regulate hormone levels.

66. Congenital Diaphragmatic Hernia: Congenital diaphragmatic hernia is a birth defect where there is a hole in the diaphragm, allowing organs to move into the chest cavity. Surgery is often required to repair the hernia.

67. Congenital Hand Disorders: Congenital hand disorders encompass a range of conditions affecting the development of the hand and fingers. Treatment depends on the specific disorder and its impact on function.

68. Congenital Heart Disease: Congenital heart disease refers to structural defects in the heart present at birth. Treatment varies depending on the specific defect and may involve medications or surgery.

69. Congenital Lung Malformations: Congenital lung malformations are abnormalities in the development of the lungs before birth. Surgery may be required to remove the malformation if it causes breathing difficulties.

70. Congenital Rubella: Congenital rubella occurs when a pregnant woman with rubella (German measles) passes the virus to her baby, leading to birth defects. Vaccination is an effective way to prevent congenital rubella.

71. Congenital Syphilis: Congenital syphilis is a sexually transmitted infection passed from mother to baby during pregnancy. Early detection and treatment are essential to prevent complications.

72. Congestive Heart Failure: Congestive heart failure is a condition where the heart cannot pump blood effectively, leading to fluid buildup in the lungs and other tissues. Treatment involves lifestyle changes, medications, and in some cases, medical devices.

73. Conjoined Twins: Conjoined twins are identical twins who are physically connected to each other. Separation surgery may be considered depending on the location and complexity of the connection.

74. Conjunctivitis: Conjunctivitis, also known as pink eye, is inflammation of the conjunctiva (the thin, transparent layer covering the white part of the eye). Treatment depends on the cause and may include antibiotics or antiviral medications.

75. Constipation: Constipation refers to infrequent bowel movements or difficulty passing stools. Lifestyle changes, dietary adjustments, and over-the-counter medications may help alleviate constipation.

76. Corneal Abrasion: A corneal abrasion is a scratch on the cornea, the clear front surface of the eye. Treatment involves protecting the eye and using lubricating eye drops.

77. Coronary Artery Disease (CAD): Coronary artery disease is a condition where the coronary arteries supplying the heart muscle become narrowed or blocked. Treatment includes lifestyle changes, medications, and sometimes angioplasty or bypass surgery.

78. Coronavirus (COVID-19): COVID-19 is a highly contagious viral infection caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Prevention measures, vaccination, and supportive care are essential for managing COVID-19.

79. Cough: A cough is a reflex action to clear the airways of mucus, irritants, or foreign particles. It can be caused by various conditions and may require treatment based on the underlying cause.

80. Cowpox: Cowpox is a viral skin infection that can cause mild symptoms. Vaccination against smallpox can provide protection against cowpox.

81. Coxsackievirus: Coxsackievirus infections can cause a wide range of symptoms, including mild respiratory illness, hand, foot, and mouth disease, and viral meningitis. Supportive care is typically used for management.

82. Cracked or Dry Skin: Cracked or dry skin can be caused by various factors, including weather conditions and skin disorders. Moisturizers and proper skin care can help alleviate symptoms.

83. Cradle Cap: Cradle cap is a common condition in infants characterized by crusty, greasy patches on the scalp. Gentle cleansing and moisturizing can help manage cradle cap.

84. Craniofacial Microsomia: Craniofacial microsomia is a birth defect affecting the development of the face and skull. Treatment may involve surgery and other interventions to improve facial symmetry and function.

85. Craniopharyngioma: Craniopharyngioma is a rare brain tumor that can affect the pituitary gland and nearby structures. Treatment options include surgery, radiation therapy, and hormone replacement.

86. Craniosynostosis: Craniosynostosis is a condition where the bones of an infant’s skull fuse prematurely. Surgery is often needed to correct the shape of the skull and allow for proper brain growth.

87. Creeping Eruption: Creeping eruption is a parasitic skin infection caused by hookworm larvae. Medications are used to treat the infection.

88. Creutzfeldt-Jakob Disease (CJD): Creutzfeldt-Jakob disease is a rare and fatal brain disorder characterized by rapidly progressive dementia. There is no cure for CJD, and treatment focuses on managing symptoms.

89. Crimean-Congo Haemorrhagic Fever (CCHF): Crimean-Congo hemorrhagic fever is a viral infection transmitted by ticks or contact with infected animals or humans. Supportive care and antiviral medications may be used for treatment.

90. Crohn’s Disease: Crohn’s disease is a type of inflammatory bowel disease (IBD) causing inflammation in the digestive tract. Treatment aims to manage inflammation and prevent complications.

91. Croup: Croup is a viral infection that affects the upper airways in young children, causing a barking cough and breathing difficulties. Symptomatic relief and humidified air can help alleviate symptoms.

92. Crouzon Syndrome: Crouzon syndrome is a genetic disorder affecting the growth of the skull and facial bones. Surgery may be required to correct the abnormal skull and facial features.

93. Crying Baby: A crying baby can be caused by various factors, including hunger, discomfort, or illness. Identifying and addressing the underlying cause are essential for soothing the baby.

94. Crying Child: As with a crying baby, a crying child may cry due to various reasons. Communicating with the child and providing comfort can help soothe their distress.

95. Cryptorchidism: Cryptorchidism is a condition where one or both testicles fail to descend into the scrotum. Surgery may be recommended to correct the condition and prevent complications.

96. Cryptosporidiosis: Cryptosporidiosis is a parasitic infection affecting the intestines, leading to diarrhea and dehydration. Supportive care and hydration are important for management.

97. Cushing’s Disease: Cushing’s disease is a condition characterized by excess production of cortisol by the adrenal glands. Treatment may involve surgery, radiation therapy, or medications.

98. Cushing’s Syndrome: Cushing’s syndrome refers to high levels of cortisol in the body, often caused by long-term use of corticosteroid medications. Treatment involves managing the underlying cause and adjusting medication dosages.

99. Cutaneous Anthrax: Cutaneous anthrax is a bacterial skin infection caused by exposure to Bacillus anthracis spores. Antibiotics are used for treatment.

100. Cutaneous Leishmaniasis: Cutaneous leishmaniasis is a parasitic infection transmitted by sandflies, causing skin ulcers. Antiparasitic medications are used for treatment.

101. Cutaneous T-cell Lymphoma (CTCL): Cutaneous T-cell lymphoma is a type of non-Hodgkin lymphoma affecting the skin. Treatment options may include topical medications, phototherapy, or systemic therapies.

102. Cutaneous Warts: Cutaneous warts are benign skin growths caused by human papillomavirus (HPV) infection. Over-the-counter treatments or medical procedures may be used for wart removal.

103. Cutis Marmorata Telangiectatica Congenita: Cutis marmorata telangiectatica congenita (CMTC) is a rare vascular condition affecting the skin. Management focuses on symptom relief and supportive care.

104. Cystic Fibrosis: Cystic fibrosis is a genetic disorder affecting the respiratory and digestive systems. Treatment includes airway clearance techniques, medications, and lifestyle adjustments.

105. Cystitis: Cystitis is inflammation of the bladder, often caused by a bacterial infection. Antibiotics are used for treatment.

106. Cystocele: Cystocele is a condition where the bladder protrudes into the vagina. Management may involve pelvic floor exercises or surgery.

107. Cytomegalovirus Infection: Cytomegalovirus (CMV) infection is a common viral infection that can cause symptoms in healthy individuals and severe complications in immunocompromised individuals. Antiviral medications may be prescribed for severe infections.


I hope you found this article “Diseases That Start With C” helpful and got insights into some of the rare and lesser-known medical conditions.

Also, keep in mind that, this isn’t an exhaustive list, if there are any Diseases starting with the letter C.

Feel free to leave a comment below with the missing Disease and I’ll update the list as soon as possible.

And, if you’d like to explore more Diseases starting with different letters of the alphabet, click the link below:

  • Diseases That Start With D
  • Diseases That Start With E
  • Diseases That Start With F
  • Diseases That Start With G

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