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

Embarking on our alphabetical health exploration, we turn our focus to diseases beginning with the letter ‘R’. This segment of our journey brings to light a variety of conditions, ranging from the rare and deadly to those impacting blood, bone, mental health, and more.

We will delve into autoimmune disorders and bacterial infections, uncovering the diverse spectrum of diseases starting with ‘R’ and their unique challenges.

Top 30 Diseases that Start with R

Below are the 30 common diseases starting with the letter ‘R’.

  • Rheumatoid Arthritis: Autoimmune joint inflammation.
  • Rosacea: Chronic skin condition causing redness.
  • Rubella (German Measles): Contagious viral infection.
  • Rickets: Vitamin D deficiency in children.
  • Ringworm: Fungal skin infection.
  • Renal Cell Carcinoma: Kidney cancer.
  • Rabies: Fatal viral infection from animal bites.
  • Raynaud’s Disease: Blood vessels spasm reducing blood flow.
  • Respiratory Syncytial Virus (RSV): Respiratory infection in children.
  • Restless Legs Syndrome: Uncontrollable leg movement urge.
  • Rhinoplasty Complications: Issues from nose surgery.
  • Reactive Arthritis: Joint inflammation after infection.
  • Retinitis Pigmentosa: Genetic eye disorder.
  • Reye’s Syndrome: Rare, serious condition affecting the liver and brain.
  • Rotavirus: Diarrheal illness in children.
  • Reflux Esophagitis: Acid reflux damages the esophagus.
  • Retroperitoneal Fibrosis: Abnormal tissue growth behind the stomach.
  • Rosai-Dorfman Disease: Rare disorder causing overproduction of immune cells.
  • Rhabdomyolysis: Breakdown of muscle tissue.
  • Retinal Detachment: Emergency condition needing immediate care.
  • Rheumatic Fever: Inflammatory disease from strep throat.
  • Radiation Sickness: Illness from high-dose radiation.
  • Rett Syndrome: Rare genetic neurological disorder.
  • Rocky Mountain Spotted Fever: Tick-borne bacterial infection.
  • Rheumatic Heart Disease: Heart damage from rheumatic fever.
  • Rectal Cancer: Cancer in the rectum.
  • Rhinovirus Infection: Common cold virus.
  • Rosai-Dorfman-Destombes Syndrome: Rare histiocytic disorder.
  • Rumination Disorder: Chronic regurgitation of food.
  • Rapid Eye Movement Sleep Behavior Disorder: Acting out dreams.

Also, Check:

Medical Terms That Start With R

Fitness Words That Start With R

Rare Diseases That Start With R

  • Rapunzel Syndrome: Rare intestinal hairball.
  • Rasmussen’s Encephalitis: Chronic inflammation of the brain.
  • Refsum Disease: Rare genetic disorder affecting metabolism.
  • Riedel’s Thyroiditis: Chronic inflammation of the thyroid.
  • Rothmund-Thomson Syndrome: Genetic skin condition.

Deadly Diseases That Start With R

  • Renal Cell Carcinoma: Kidney cancer with potential fatality.
  • Rabies: Almost always fatal once symptoms appear.
  • Respiratory Syncytial Virus (RSV): Severe cases can be lethal.
  • Reye’s Syndrome: A potentially fatal condition affecting the liver and brain.
  • Rocky Mountain Spotted Fever: This can be deadly without treatment.

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Other Diseases Beginning With R (Divided By Type)

Moving forward, we explore a range of diseases starting with the letter “R,” categorized by their specific types. This classification provides a clearer understanding of the diseases, aiding in their identification and management.

Autoimmune Diseases That Start With R

  • Rheumatoid Arthritis: Chronic inflammatory joint disease.
  • Reactive Arthritis: Joint inflammation after infection.
  • Raynaud’s Phenomenon: Reduced blood flow to extremities.
  • Relapsing Polychondritis: Inflammation of cartilage.
  • Rasmussen’s Encephalitis: Rare, inflammatory neurological disorder.

Blood Diseases That Start With R

  • Red Cell Aplasia: Severe anemia due to failure in red blood cell production.
  • Rosai-Dorfman Disease: Rare disorder involving overproduction of histiocytes.
  • Reticulocytosis: Increased reticulocytes in blood, indicating abnormal red blood cell production.
  • Rocky Mountain Spotted Fever: Tick-borne illness affecting blood vessels.
  • Raynaud’s Disease: Blood vessel disorder causing fingers and toes to feel numb and cold.

Bone Diseases That Start With R

  • Rickets: Bone weakness due to vitamin D deficiency.
  • Rheumatoid Arthritis: Autoimmune disease causing joint pain and damage.
  • Renal Osteodystrophy: Bone disorder resulting from chronic kidney disease.
  • Rotator Cuff Tear: Tear of shoulder tendons.
  • Reflex Sympathetic Dystrophy (RSD): Complex regional pain syndrome, often following an injury.

Bacterial Infection That Start With R

  • Rheumatic Fever: Inflammatory disease following strep throat.
  • Rocky Mountain Spotted Fever: Serious tick-borne disease.
  • Rat-Bite Fever: Infection from rodents’ bites.
  • Relapsing Fever: Bacterial infection transmitted by lice or ticks.
  • Roseola: Common viral infection in young children.

Animal Diseases That Start With R

In the next segment, we delve into the realm of veterinary science, exploring the most common animal diseases beginning with the letter “R.”

These diseases significantly impact animal health and require attention for effective animal care and management.

  • Rabies: Fatal viral disease affecting mammals.
  • Ringworm: Fungal skin infection.
  • Rinderpest: Viral disease in cattle and other animals.
  • Ruminal Tympany (Bloat): Digestive disorder in ruminants.
  • Rotavirus: Viral infection causing diarrhea in young animals.
  • Rhinopneumonitis: Respiratory infection in horses.
  • Respiratory Syncytial Virus (RSV): Infectious disease in cattle.
  • Rift Valley Fever: Viral disease in livestock, transmittable to humans.
  • Rain Scald: Bacterial skin infection in horses.
  • Red Mange (Demodectic Mange): Skin disease caused by mites in dogs.

diseases that start with r