All Diseases that Start with F (Rare, Deadly, and Many More!)

Welcome to an all-encompassing journey through diseases beginning with the letter ‘F’. In this extensive guide, we’ll explore a variety of illnesses affecting everything from blood, bones, and eyes, to mental health and lungs. We’ll also look at skin conditions, as well as diseases specific to dogs and cats.

From rare and deadly diseases to autoimmune disorders and bacterial infections, get ready for a deep dive into the world of ‘F’ diseases.

Top 100 Diseases that Start with F

Below are the top 100 diseases beginning with the letter ‘F’.

• Fibromyalgia: Chronic pain and fatigue disorder.
• Fever: Elevated body temperature, often due to infection.
• Flu (Influenza): Viral respiratory infection.
• Frostbite: Skin damage from extreme cold.
• Fatty Liver Disease: Excess fat in liver cells.
• Fibrosis: Thickening and scarring of connective tissue.
• Foot Drop: Difficulty lifting the front part of the foot.
• Fractures: Breaks in bones.
• Fungal Infections: Infections caused by fungi.
• Fibroadenoma: Benign breast tumor.
• Fasciitis: Inflammation of the fascia tissue.
• Febrile Seizures: Seizures associated with fever in children.
• Felty Syndrome: Complication of rheumatoid arthritis.
• Fetal Alcohol Syndrome: Developmental disorders from alcohol exposure in utero.
• Fibrocystic Breast Changes: Lumpy or painful breasts.
• Fibromuscular Dysplasia: Artery narrowing and enlargement.
• Fibrous Dysplasia: Bone development disorder.
• Fifth Disease: Mild viral infection in children.
• Fissured Tongue: Grooves on the tongue’s surface.
• Flat Feet: Lack of arches in feet.
• Fluorosis: Damage to teeth/bones from fluoride.
• Focal Segmental Glomerulosclerosis: Scarring in kidney filters.
• Folliculitis: Inflamed hair follicles.
• Food Allergies: Allergic reactions to certain foods.
• Foot Ulcers: Open sores on the foot.
• Fragile X Syndrome: Genetic condition causing developmental issues.
• Friedreich’s Ataxia: An inherited disease affecting nerve and muscle function.
• Frontal Lobe Epilepsy: Seizures originating in the frontal lobe.
• Frontotemporal Dementia: Early onset dementia.
• Frozen Shoulder: Stiffness and pain in the shoulder.
• Fuchs’ Dystrophy: Eye condition affecting the cornea.
• Functional Gastrointestinal Disorder: GI issues without structural damage.
• Fungal Nail Infections: Fungal growth under nails.
• Furunculosis: Boils on the skin.
• Fusobacterium Infections: Infections from Fusobacterium bacteria.
• Fatty Liver Disease, Non-Alcoholic: Liver fat buildup without heavy drinking.
• Feeding Disorders in Infancy: Eating difficulties in babies.
• Female Genital Mutilation Complications: Health issues from FGM.
• Femoral Hernia: Bulge near the groin or thigh.
• Fetal Growth Restriction: Slowed growth of the fetus.
• Fibrocartilaginous Embolism: Spinal cord blockage.
• Fibromyalgia Syndrome: Chronic pain and fatigue.
• Filariasis: Parasitic infection by thread-like worms.
• Fish Allergy: Allergic reactions to fish proteins.
• Fistula: Abnormal connection between organs.
• Flatulence: Excessive gas in the digestive system.
• Flea-Borne (Murine) Typhus: Rickettsial disease from fleas.
• Focal Dystonia: Involuntary muscle contractions.
• Follicular Lymphoma: Type of non-Hodgkin lymphoma.
• Food Poisoning: Illness from contaminated food.
• Foot-and-Mouth Disease: Viral disease in animals.
• Fordyce Spots: Small, painless spots on the skin.
• Forestier’s Disease: Stiffness and pain in the spine.
• Fournier’s Gangrene: Flesh-eating bacterial infection of the genitals.
• Fracture, Stress: Small crack in a bone.
• Fragile X-associated Tremor/Ataxia Syndrome (FXTAS): Genetic tremor and balance disorder.
• Francisella tularensis Infection: Bacterial infection causing tularemia.
• Freckles: Small, pigmented spots on the skin.
• Freeman-Sheldon Syndrome: Rare congenital myopathy.
• Frostnip: Mild form of frostbite.
• Functional Dyspepsia: Chronic indigestion without cause.
• Fungal Eye Infections: Eye infections caused by fungi.
• Furuncle: Deep infection of a hair follicle.
• Fusarium Infection: Infection from Fusarium fungi.
• Facet Joint Syndrome: Pain at spinal joints.
• Failure to Thrive: Inadequate growth in children.
• Familial Chylomicronemia Syndrome: High levels of chylomicrons in blood.
• Familial Cold Autoinflammatory Syndrome: Disorder causing fever and rash.
• Familial Dysautonomia: Genetic nerve disorder.
• Familial Hypercholesterolemia: High cholesterol levels.
• Familial Hypocalciuric Hypercalcemia: High calcium, low urinary calcium.
• Familial Mediterranean Fever: Genetic inflammatory disorder.
• Familial Tremor: Genetic shaking or trembling.
• Fanconi Syndrome: Kidney disorder affecting electrolyte balance.
• Farber’s Disease: Genetic disorder affecting joints and tissues.
• Farmer’s Lung: Lung disease from inhaling dust.
• Fast Heart Rate (Tachycardia): Abnormally fast heartbeat.
• Fatal Familial Insomnia: Rare prion disease.
• Fatty Acid Metabolism Disorders: Problems breaking down fatty acids.
• Febrile Neutropenia: Fever with low neutrophil count.
• Femoral Acetabular Impingement: Hip joint disorder.
• Femoroacetabular Impingement: Abnormal hip joint bones.
• Fetal Varicella Syndrome: Congenital varicella infection.
• Fibroadenoma of Breast: Benign breast tumor.
• Fibromuscular Dysplasia (FMD): Vessel wall abnormality.
• Fibrosarcoma: Malignant tumor in fibrous tissue.
• Fibrous Plaque of Penis: Scar tissue causing a curved erection.
• Fiedler’s Myocarditis: Rare inflammatory heart disease.
• Fifth Metatarsal Fracture: Break in foot bone.
• Filarial Worm: Parasitic roundworm infection.
• Finger Felon: Deep infection of the fingertip.
• Fissured Tooth: Tooth with cracks.
• Fistula-In-Ano: Abnormal anal canal connection.
• Flail Chest: Multiple broken ribs.
• Flank Pain: Pain in the side of the body.
• Flat Head Syndrome (Plagiocephaly): Misshapen head in infants.
• Flexor Tendon Injury: Injury to finger bending tendons.
• Floating Kidney (Nephroptosis): Downward displacement of the kidney.
• Floppy Eyelid Syndrome: Easily everted eyelids.
• Fluoride Poisoning: Excess fluoride consumption.

Also, Check:

Medical Terms That Start With F

Fitness Words That Start With F

Rare Diseases That Start With F

• Fabry Disease
• Fahr’s Syndrome
• Familial Adenomatous Polyposis
• Familial Mediterranean Fever
• Fanconi Anemia
• Farber’s Disease
• Felty’s Syndrome
• Fibrodysplasia Ossificans Progressiva
• Fibromuscular Dysplasia
• Fibrosing Mediastinitis
• Fiedler’s Myocarditis
• Floating-Harbor Syndrome
• Foix-Alajouanine Syndrome
• Fragile X Syndrome
• Fraser Syndrome

Deadly Diseases That Start With F

• Fatal Familial Insomnia
• Feline Leukemia Virus (in cats)
• Fibrolamellar Hepatocellular Carcinoma
• Fifth Disease
• Filariasis
• Flesh-Eating Bacterial Infection
• Foodborne Illnesses
• Foot and Mouth Disease
• Fournier’s Gangrene
• Fragile X-associated Tremor/Ataxia Syndrome
• Francisella tularensis Infection
• Friedreich’s Ataxia
• Frontotemporal Dementia
• Fulminant Hepatitis
• Fungal Meningitis

Explore More Diseases Starting With:

A – B – C – D – E – F – G – H – I – J – K – L – M – N – O – P – Q – R – S – T – U – V – W – X – Y – Z