73 Diseases That Start With The Letter F

Have you ever wondered about diseases that start with the letter “F”? 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 F, 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 F.


Diseases That Start With F

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

1. Fabella Syndrome: Fabella syndrome refers to the presence of a small, sesamoid bone called the fabella in the knee joint. Although it is a common finding, it can sometimes cause knee pain and discomfort, requiring conservative management or, in rare cases, surgical intervention.

2. Fabry Disease: Fabry disease is a rare genetic disorder that leads to the accumulation of a specific type of fat in the body’s cells, resulting in various symptoms like skin rashes, pain, and organ damage. Enzyme replacement therapy is a common treatment to manage the disease.

3. Facial Fracture: Facial fractures involve broken bones in the face, usually caused by trauma or accidents. Treatment depends on the location and severity of the fracture and may involve surgery to realign the bones.

4. Factor V Leiden: Factor V Leiden is a genetic mutation that increases the risk of blood clot formation. Individuals with this mutation may require special precautions, such as blood thinners, to prevent clot-related complications.

5. Factor XIII Deficiency: Factor XIII deficiency is a rare inherited bleeding disorder caused by a lack of a specific blood clotting factor. Treatment involves replacing the missing factor to control bleeding episodes.

6. Fainting: Fainting, also known as syncope, is a temporary loss of consciousness due to a temporary drop in blood flow to the brain. It can result from various factors, including dehydration, low blood pressure, or sudden changes in posture.

7. Fall Prevention: Fall prevention involves implementing measures to reduce the risk of falls, especially in the elderly population. Strategies may include exercise, home modifications, and the use of mobility aids.

8. Fallopian Tube Cancer: Fallopian tube cancer is a rare and aggressive gynecological cancer that starts in the fallopian tubes. Treatment typically involves surgery, chemotherapy, and sometimes radiation therapy.

9. Familial Adenomatous Polyposis (FAP): FAP is an inherited condition that leads to the formation of numerous polyps in the colon and rectum, increasing the risk of colorectal cancer. Regular screenings and, in some cases, surgical removal of the colon are essential preventive measures.

10. Familial Hypercholesterolemia: Familial hypercholesterolemia is a genetic disorder that causes high levels of cholesterol in the blood, leading to an increased risk of heart disease. Lifestyle changes and cholesterol-lowering medications are used for management.

11. Fanconi Anemia: Fanconi anemia is a rare genetic disorder that affects the bone marrow, leading to decreased production of blood cells. Treatment may involve blood transfusions, bone marrow transplantation, and supportive care.

12. Fanconi-Bickel Syndrome: Fanconi-Bickel syndrome is a rare metabolic disorder that affects how the body processes sugars. It can lead to symptoms like growth delays and liver enlargement. Management focuses on dietary modifications and supportive care.

13. Farsightedness (Hyperopia): Farsightedness is a refractive error of the eye where distant objects are clearer than nearby objects. Corrective lenses or surgery can help improve vision.

14. Farting: Farting, medically known as flatulence, is the release of gas from the digestive system through the rectum. It is a normal bodily function and helps relieve bloating and discomfort.

15. Fasciitis: Fasciitis refers to inflammation of the fascia, the tissue that surrounds muscles and organs. Plantar fasciitis, which affects the sole of the foot, is a common type. Treatment involves rest, stretching, and pain relief measures.

16. Fasciotomy: Fasciotomy is a surgical procedure where the fascia is cut to relieve pressure and swelling in the muscles and tissues. It is often performed in cases of compartment syndrome.

17. Fatigue: Fatigue is a feeling of extreme tiredness and lack of energy that can be caused by various factors, including lack of sleep, stress, or an underlying medical condition.

18. Febrile Seizures: Febrile seizures are convulsions that occur in young children due to high fevers, typically above 38°C (100.4°F). Most febrile seizures are brief and do not cause long-term harm.

19. Febris Recurrens: Febris recurrens, also known as relapsing fever, is a bacterial infection transmitted by ticks or lice. It causes recurrent bouts of high fever, body aches, and headache. Antibiotics are used for treatment.

20. Fecal Impaction: Fecal impaction is a severe constipation condition where a large, hardened stool becomes stuck in the rectum and cannot be expelled. It often requires medical intervention for removal.

21. Fecal Incontinence: Fecal incontinence is the inability to control bowel movements, leading to involuntary leakage of stool. It can be caused by various factors and requires medical evaluation for proper management.

22. Fecalith: A fecalith is a hardened mass of feces that can cause blockage in the intestines, leading to pain and constipation. In some cases, it may require removal through surgery.

23. Feline Leukemia Virus (FeLV): FeLV is a viral infection that affects cats, weakening their immune system and making them susceptible to various infections. There is no cure, but supportive care can improve the quality of life for affected cats.

24. Feline Immunodeficiency Virus (FIV): FIV is a viral infection that weakens a cat’s immune system, similar to HIV in humans. There is no cure, but proper care and monitoring can help manage the condition.

25. Felty Syndrome: Felty syndrome is a complication of rheumatoid arthritis characterized by an enlarged spleen and decreased white blood cell count. Treatment may involve medications to manage rheumatoid arthritis and prevent infections.

26. Female Infertility: Female infertility refers to the inability to conceive or carry a pregnancy to term. It can have various causes and may require fertility treatments to achieve pregnancy.

27. Fetal Alcohol Spectrum Disorder (FASD): FASD is a group of conditions that can occur in individuals whose mothers consumed alcohol during pregnancy. It can cause a range of physical, behavioral, and cognitive issues.

28. Fetal Alcohol Syndrome: Fetal alcohol syndrome is the most severe form of FASD and can lead to distinct facial features, developmental delays, and intellectual disabilities.

29. Fetal Distress: Fetal distress occurs when the baby’s health is compromised during pregnancy or childbirth. Monitoring and appropriate medical intervention are essential to ensure the baby’s well-being.

30. Fever: Fever is a temporary increase in body temperature, usually in response to an infection or illness. It is the body’s natural defense mechanism and generally resolves on its own.

31. Fibrillary Glomerulonephritis: Fibrillary glomerulonephritis is a rare kidney disease characterized by the deposition of abnormal protein fibers in the glomeruli, the filtering units of the kidneys. It can lead to proteinuria (protein in the urine) and impaired kidney function. Treatment aims to manage symptoms, slow disease progression, and preserve kidney function through medications and, in some cases, immunosuppressive therapy.

32. Fibroadenoma: Fibroadenoma is a common non-cancerous breast tumor that often occurs in young women. It presents as a firm, movable lump in the breast and does not require treatment unless it causes discomfort or grows larger.

33. Fibroids: Fibroids, also known as uterine leiomyomas, are non-cancerous growths that develop in the uterus. Depending on their size and symptoms, treatment options may include medication, surgical removal, or uterine artery embolization.

34. Fibromuscular Dysplasia: Fibromuscular dysplasia is a vascular disorder affecting the walls of medium-sized arteries, leading to abnormal growth and narrowing. Depending on the affected artery, symptoms can vary, and treatment may involve medication or interventional procedures.

35. Fibromyalgia: Fibromyalgia is a chronic condition characterized by widespread pain, fatigue, and tender points. Management often includes a combination of medications, exercise, and lifestyle changes.

36. Fibrous Dysplasia: Fibrous dysplasia is a rare bone disorder where fibrous tissue replaces normal bone, leading to bone weakening and deformities. Treatment depends on the severity and may involve surgery or medication.

37. Fifth Disease Viral Rash: Fifth disease, caused by parvovirus B19, is a viral infection that primarily affects children. It presents with a distinctive red rash on the face, giving it the name “slapped cheek” rash. Most cases resolve on their own without specific treatment.

38. Filariasis: Filariasis is a parasitic disease transmitted by mosquitoes, causing lymphatic obstruction and swelling of body parts, known as elephantiasis. Prevention focuses on mosquito control and medication to treat the infection.

39. Finger Injury: Finger injuries can include fractures, dislocations, and sprains, often caused by accidents or sports-related activities. Treatment depends on the type and severity of the injury and may involve rest, splinting, or surgery.

40. Fire Ant Sting: Fire ants inject venom through their stings, causing painful, itchy, and potentially allergic reactions in individuals sensitive to the venom. First aid measures and topical treatments can help alleviate symptoms.

41. Fish Odor Syndrome (Trimethylaminuria): Trimethylaminuria is a metabolic disorder that results in a strong body odor similar to the smell of fish. Management includes dietary modifications and symptom relief measures.

42. Fitz-Hugh-Curtis Syndrome: Fitz-Hugh-Curtis syndrome is a complication of pelvic inflammatory disease (PID) characterized by inflammation of the liver capsule and surrounding tissues. Treatment involves antibiotics to address the underlying infection.

43. Fitzsimmons-Guilbert Syndrome: Fitzsimmons-Guilbert syndrome, also known as episodic unilateral mydriasis, causes episodic enlargement of one pupil. The cause is often unknown, and treatment focuses on managing symptoms.

44. Flatfoot: Flatfoot, also known as pes planus, is a condition where the arch of the foot is flattened, causing foot pain and discomfort. Supportive footwear and orthotics can help alleviate symptoms.

45. Floating Harbor Syndrome: Floating Harbor syndrome is a rare genetic disorder characterized by developmental delays, distinctive facial features, and growth abnormalities. Management involves supportive care and therapies to address developmental challenges.

46. Flu: Influenza, commonly known as the flu, is a highly contagious viral infection that affects the respiratory system. Prevention through vaccination and antiviral medications can help reduce the severity and spread of the flu.

47. Fluid Intake Decreased: Decreased fluid intake can lead to dehydration, causing symptoms like dry mouth, fatigue, and dizziness. Adequate fluid intake is essential for maintaining overall health and hydration.

48. Focal Cortical Dysplasia: Focal cortical dysplasia is a brain malformation that can cause epilepsy and neurological symptoms. Treatment may include medication or surgery to control seizures.

49. Focal Segmental Glomerulosclerosis (FSGS): FSGS is a kidney disorder where the glomeruli become scarred, affecting kidney function. Management involves medications and lifestyle changes to slow disease progression and prevent complications.

50. Foetal Alcohol Syndrome: Foetal alcohol syndrome is a severe form of fetal alcohol spectrum disorder (FASD) caused by maternal alcohol consumption during pregnancy. It can lead to significant developmental and cognitive impairments.

51. Follicular Lymphoma: Follicular lymphoma is a type of non-Hodgkin lymphoma that affects the lymph nodes. Treatment may involve watchful waiting, chemotherapy, radiation, or immunotherapy, depending on the stage and extent of the disease.

52. Folliculitis: Folliculitis is the inflammation of hair follicles, often caused by bacterial or fungal infections. It results in red, pimple-like bumps on the skin and can be treated with topical or oral medications.

53. Food Allergy: Food allergy is an immune system reaction to specific foods, leading to a range of symptoms, from mild rashes to severe anaphylaxis. Avoiding the allergen and carrying emergency medications are crucial for management.

54. Food Poisoning: Food poisoning occurs due to consuming contaminated or spoiled food, resulting in gastrointestinal symptoms like nausea, vomiting, and diarrhea. Staying hydrated and rest are essential for recovery.

55. Foot and Mouth Disease: Foot and mouth disease (FMD) is a highly contagious viral disease that affects cloven-hoofed animals. It can cause blisters and sores on the mouth and feet, leading to economic losses in the livestock industry.

56. Foreign Body Ingestion: Foreign body ingestion occurs when objects are swallowed and become stuck in the digestive tract. In some cases, endoscopic or surgical removal may be necessary.

57. Fractures: Fractures are breaks or cracks in bones, commonly caused by trauma or accidents. Treatment depends on the type and location of the fracture and may involve casting, splinting, or surgery.

58. Fractures and Growth Plate Injuries: Growth plate injuries occur in children and adolescents, where the growth plates of bones are damaged. Prompt medical evaluation and appropriate treatment are necessary to avoid growth disturbances.

59. Fragile X Syndrome: Fragile X syndrome is a genetic disorder causing developmental and intellectual disabilities. Early intervention and supportive care can help individuals with fragile X syndrome achieve their full potential.

60. Freeman-Sheldon Syndrome: Freeman-Sheldon syndrome is a rare genetic disorder characterized by joint contractures, distinctive facial features, and other physical abnormalities. Management focuses on addressing specific symptoms and supporting affected individuals.

61. Friedreich’s Ataxia: Friedreich’s ataxia is a progressive neurological disorder affecting movement and coordination. It is caused by a genetic mutation that leads to the degeneration of nerve cells in the spinal cord and brain. Management involves symptom-specific treatments, physical therapy, and support to improve quality of life.

62. Frontotemporal Dementia (FTD): Frontotemporal dementia is a group of brain disorders that primarily affect the frontal and temporal lobes, leading to personality changes, language difficulties, and behavioral problems. There is no cure, but therapies and support can help manage symptoms and improve functioning.

63. Frostbite: Frostbite is a cold-induced injury that occurs when skin and underlying tissues freeze due to exposure to extremely cold temperatures. Rapid rewarming and medical treatment are essential to prevent complications and tissue damage.

64. Frozen Shoulder: Frozen shoulder, also known as adhesive capsulitis, is a condition characterized by pain and stiffness in the shoulder joint, limiting its range of motion. Physical therapy and anti-inflammatory medications are commonly used for treatment.

65. Fructose Malabsorption: Fructose malabsorption is a condition where the small intestine cannot properly absorb fructose, leading to gastrointestinal symptoms like bloating, gas, and diarrhea. Dietary modifications are essential for managing the condition.

66. Fuchs’ Dystrophy: Fuchs’ dystrophy is a progressive eye disorder that affects the cornea, leading to vision impairment and discomfort. Treatment may involve medications, eye drops, and, in advanced cases, corneal transplant.

67. Fuchs’ Endothelial Dystrophy: Fuchs’ endothelial dystrophy is a specific form of Fuchs’ dystrophy, affecting the endothelial layer of the cornea. Treatment aims to manage symptoms and improve vision through medications or corneal transplantation.

68. Functional Neurological Disorder (FND): Functional neurological disorder is a condition where the nervous system exhibits physical symptoms without a clear organic cause. Management often involves a multidisciplinary approach, including psychotherapy and physical therapy.

69. Fungal Infections: Fungal infections can affect various parts of the body, including the skin, nails, and internal organs. Treatment depends on the type and location of the infection and may involve antifungal medications.

70. Fungal Nail Infection: Fungal nail infection, also known as onychomycosis, affects the nails, causing them to become thickened, discolored, and brittle. Treatment may involve antifungal medication or, in severe cases, surgical removal of the affected nail.

71. Furuncle (Boil): A furuncle, commonly known as a boil, is a painful skin infection that occurs around a hair follicle. Warm compresses and antibiotics may be used to promote healing.

72. Furunculosis: Furunculosis refers to the recurrent occurrence of boils, often caused by bacterial infection. Identifying and treating underlying factors are essential to prevent further episodes.

73. Fusariosis: Fusariosis is a fungal infection that can affect the skin, eyes, and other organs, particularly in individuals with weakened immune systems. Treatment involves antifungal medications and supportive care.


I hope you found this article “Diseases That Start With F” 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 F.

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 G
  • Diseases That Start With H
  • Diseases That Start With I
  • Diseases That Start With J

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