95 Diseases That Start With The Letter T

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


Diseases That Start With T

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

1. Tachyarrhythmia: Tachyarrhythmia refers to an abnormal heart rhythm characterized by a fast heartbeat. It can cause palpitations, dizziness, and shortness of breath. Treatment may involve medications, cardioversion, or catheter ablation.

2. Taeniasis (Tapeworm infection): Taeniasis is an intestinal infection caused by ingesting tapeworm larvae through contaminated food. Symptoms may include abdominal pain, weight loss, and nausea. Proper sanitation and cooking of food can prevent taeniasis.

3. Takayasu’s Arteritis: Takayasu’s Arteritis is a rare autoimmune disease that causes inflammation of the large blood vessels, particularly the aorta and its branches. It can lead to reduced blood flow to organs and may require immunosuppressive medications.

4. Tardive Dyskinesia: Tardive Dyskinesia is a side effect of long-term use of certain medications, leading to involuntary movements of the face and body. Reducing the dosage or changing medications may alleviate symptoms.

5. Tarsal Coalition: Tarsal coalition is a congenital condition where two or more tarsal bones in the foot are fused, causing foot pain and limited mobility. Treatment options may include physical therapy or surgical intervention.

6. Taurodontism: Taurodontism is a dental anomaly where the roots of teeth are elongated, leading to an enlarged pulp chamber. It is usually asymptomatic but may require dental monitoring.

7. Tay-Sachs Disease: Tay-Sachs Disease is a genetic disorder that affects the nervous system, leading to progressive neurological deterioration. It is most common in infants, and unfortunately, there is currently no cure.

8. Tear Duct – Blocked: A blocked tear duct can cause excessive tearing, discharge, and eye irritation. Treatment may involve gentle massage and warm compresses to aid drainage.

9. Teething: Teething refers to the process of a baby’s primary teeth erupting through the gums. It can cause discomfort and irritability, but soothing measures like teething toys and gentle gum massages can provide relief.

10. Temporal Arteritis: Temporal Arteritis, or Giant Cell Arteritis, is an inflammatory condition that affects the blood vessels, particularly those in the head. Early diagnosis and prompt treatment with corticosteroids are crucial to prevent complications.

11. Temporomandibular Joint (TMJ) Disorder: TMJ Disorder involves pain and dysfunction in the jaw joint and surrounding muscles. It can cause jaw clicking, headaches, and difficulty in chewing. Treatment may include physical therapy, medications, and oral splints.

12. Tendonitis: Tendonitis is inflammation of a tendon, commonly affecting the shoulder, elbow, or knee. Rest, ice, and physical therapy can help with healing.

13. Tension Headache: Tension headaches are the most common type of headache, characterized by a dull, aching pain in the head and neck. Managing stress and using over-the-counter pain relievers can alleviate symptoms.

14. Teratoma: Teratoma is a type of tumor that contains tissues from different germ layers, potentially affecting various organs. Treatment involves surgical removal, and some teratomas may require additional therapies.

15. Testicular Cancer: Testicular cancer occurs in the testicles and is more common in young men. Early detection and treatment offer excellent chances of recovery.

16. Testicular Lumps and Swellings: Testicular lumps and swellings can be caused by various conditions, including infections, cysts, or tumors. Prompt evaluation by a healthcare professional is essential to determine the underlying cause.

17. Tetanus: Tetanus is a bacterial infection causing severe muscle stiffness and spasms. Vaccination is crucial to prevent tetanus, and immediate medical attention is necessary if exposed to a potentially contaminated wound.

18. Tethered Spinal Cord: Tethered spinal cord is a condition where the spinal cord is abnormally attached to the surrounding tissues, leading to neurological problems. Surgical release may be necessary in severe cases.

19. Tetralogy of Fallot: Tetralogy of Fallot is a congenital heart defect characterized by four heart abnormalities, leading to oxygen-poor blood circulation. Surgery is required to correct the condition.

20. Thalassemia: Thalassemia is a group of inherited blood disorders affecting hemoglobin production. Management may involve regular blood transfusions and iron chelation therapy.

21. Thiamine Deficiency (Beriberi): Thiamine deficiency can lead to beriberi, a condition affecting the nervous and cardiovascular systems. Treatment includes thiamine supplementation and addressing the underlying cause.

22. Thirst: Thirst is the body’s natural response to dehydration and can indicate the need for increased fluid intake.

23. Threadworms: Threadworms, or pinworms, are small parasitic worms that commonly infect the intestines. Treatment involves antiparasitic medications and proper hygiene.

24. Thromboangiitis Obliterans (Buerger’s Disease): Thromboangiitis Obliterans, also known as Buerger’s Disease, is a rare inflammatory condition affecting the blood vessels in the extremities. Smoking cessation is crucial to prevent progression.

25. Thrombocythemia: Thrombocythemia is a disorder where there is an excess of platelets in the blood, potentially leading to clotting issues. Monitoring and medication may be required.

26. Thrombocytopenia: Thrombocytopenia is a condition characterized by low platelet count, leading to an increased risk of bleeding. Treatment depends on the underlying cause.

27. Thrombolysis: Thrombolysis is a medical procedure used to dissolve blood clots and restore blood flow in blocked blood vessels.

28. Thrombophlebitis: Thrombophlebitis is the inflammation of a vein with the formation of a blood clot. It commonly occurs in the legs and may cause pain, redness, and swelling. Treatment involves pain relief, compression stockings, and, in severe cases, anticoagulant medications.

29. Thrombosis and Thrombophilia: Thrombosis refers to the formation of blood clots within blood vessels, while thrombophilia is a condition that increases the risk of clot formation. Managing thrombophilia involves anticoagulant therapy and lifestyle modifications to reduce clotting risk.

30. Thrombotic Thrombocytopenic Purpura (TTP): TTP is a rare blood disorder characterized by blood clot formation in small blood vessels, leading to low platelet levels and anemia. Prompt treatment with plasma exchange is essential for survival.

31. Thrush: Thrush is a fungal infection caused by Candida yeast, leading to white patches in the mouth and throat. Antifungal medications are used to treat thrush.

32. Thyroid Cancer: Thyroid cancer develops in the thyroid gland and may require surgery, radiation, or hormone therapy for treatment.

33. Thyroid Disease: Thyroid disease encompasses various conditions affecting the thyroid gland’s function, such as hypothyroidism and hyperthyroidism. Medications and lifestyle changes are used to manage thyroid disorders.

34. Tick Bite: Tick bites can transmit various infections, including Lyme disease and Rocky Mountain spotted fever. Prompt removal and monitoring for symptoms are crucial after a tick bite.

35. Tick-borne Diseases: Tick-borne diseases include a range of infections transmitted by ticks, such as Lyme disease, Ehrlichiosis, and Babesiosis. Early diagnosis and appropriate treatment are essential for these illnesses.

36. Tick-Borne Encephalitis (TBE): TBE is a viral infection transmitted by ticks, causing inflammation of the brain and spinal cord. Vaccination is available in areas where TBE is prevalent.

37. Tinea (Ringworm): Tinea, or ringworm, is a fungal infection that can affect the skin, scalp, and nails. Antifungal medications are used to treat tinea.

38. Tinea Versicolor: Tinea versicolor is a fungal infection causing discolored patches on the skin. Antifungal treatments and maintaining proper skin hygiene can resolve the condition.

39. Tinnitus: Tinnitus is a perception of noise in the ears, such as ringing or buzzing, without an external source. Identifying and treating underlying causes is essential for managing tinnitus.

40. Toe Injury: Toe injuries can range from minor bruises to fractures or dislocations. Proper rest, ice, compression, and elevation (RICE) can aid in healing.

41. Toenail – Ingrown: An ingrown toenail occurs when the toenail grows into the surrounding skin, leading to pain and infection. Proper nail care and wearing appropriate footwear can prevent ingrown toenails.

42. Toenail Fungus (Onychomycosis): Toenail fungus is a common fungal infection of the toenails, causing thickened, discolored nails. Antifungal medications and topical treatments are used to manage onychomycosis.

43. Tonsillitis: Tonsillitis is the inflammation of the tonsils, causing sore throat, difficulty swallowing, and fever. Antibiotics may be prescribed for bacterial tonsillitis.

44. Tonsillitis/Pharyngitis: Tonsillitis and pharyngitis are both infections of the throat, causing similar symptoms like sore throat and swollen glands. Proper diagnosis is necessary for appropriate treatment.

45. Tooth Decay: Tooth decay, also known as dental caries, occurs when bacteria in the mouth produce acids that erode tooth enamel. Good oral hygiene and regular dental checkups can prevent tooth decay.

46. Tooth Injury: Tooth injuries can range from chips and cracks to avulsions (knocked-out teeth). Immediate dental attention can improve the chances of saving the tooth.

47. Toothache: Toothache can result from various dental issues, such as tooth decay, gum disease, or tooth abscess. Dental treatment is necessary to address the underlying cause.

48. Torn Meniscus: A torn meniscus is a common knee injury, often occurring during sports activities. Treatment may include rest, physical therapy, or surgery.

49. Torticollis: Torticollis is a condition where the neck muscles contract, causing the head to tilt to one side. Physical therapy and stretching exercises can help manage torticollis.

50. Toscana Virus Infection: Toscana virus is a viral infection transmitted by sandflies in Mediterranean regions. It typically causes mild flu-like symptoms.

51. Total Anomalous Pulmonary Venous Return: Total anomalous pulmonary venous return is a congenital heart defect where the pulmonary veins do not connect properly to the heart. Surgery is needed to correct the condition.

52. Tourette’s Syndrome: Tourette’s Syndrome is a neurological disorder characterized by repetitive, involuntary movements, and vocalizations known as tics. Behavioral therapies and medications can manage symptoms.

53. Toxic Adenoma: Toxic adenoma is a benign thyroid nodule that produces excessive thyroid hormones, causing hyperthyroidism. Treatment options include medications, radioactive iodine, or surgery.

54. Toxic Epidermal Necrolysis (TEN): TEN is a severe skin reaction triggered by medications or infections, leading to widespread skin detachment. Hospitalization and supportive care are essential in managing TEN.

55. Toxic Megacolon: Toxic megacolon is a complication of inflammatory bowel disease, where the colon becomes severely distended and paralyzed. Hospitalization and medical intervention are necessary to prevent life-threatening complications.

56. Toxic Shock Syndrome: Toxic shock syndrome is a rare but severe bacterial infection that can occur in both men and women. Immediate medical attention is crucial for this life-threatening condition.

57. Toxocariasis: Toxocariasis is an infection caused by roundworms commonly found in cats and dogs. Proper hygiene and deworming pets can prevent toxocariasis.

58. Toxoplasmosis: Toxoplasmosis is a parasitic infection often transmitted through contaminated food or cat feces. It can be harmful to pregnant women and people with weakened immune systems.

59. Tracheitis: Tracheitis is the inflammation of the trachea, usually caused by viral or bacterial infections. Antibiotics or antiviral medications may be prescribed for treatment.

60. Tracheoesophageal Fistula and Esophageal Atresia: Tracheoesophageal fistula and esophageal atresia are congenital conditions where the esophagus does not properly connect to the stomach. Surgery is required to correct the abnormality and allow for proper feeding and digestion.

61. Transfusion Associated Circulatory Overload (TACO): TACO occurs when a patient receives too much blood or fluid during a transfusion, leading to fluid overload in the lungs and heart. Close monitoring and appropriate fluid management are crucial in preventing TACO.

62. Transfusion Related Acute Lung Injury (TRALI): TRALI is a severe reaction to blood transfusion, causing acute lung injury. Supportive care, oxygen therapy, and respiratory support are necessary for managing TRALI.

63. Transient Global Amnesia: Transient global amnesia is a temporary memory loss condition, usually lasting for several hours. It typically resolves on its own without long-term consequences.

64. Transient Ischaemic Attack (TIA): TIA, also known as a mini-stroke, is a brief episode of stroke-like symptoms that resolve within 24 hours. Prompt medical attention is necessary to prevent a full-blown stroke.

65. Transient Synovitis: Transient synovitis is a common cause of hip pain in children, typically following a viral infection. Rest and pain relief measures can manage transient synovitis.

66. Transverse Myelitis: Transverse myelitis is inflammation of the spinal cord, leading to neurological problems like weakness and sensory disturbances. Treatment involves addressing the underlying cause and managing symptoms.

67. Traumatic Brain Injury (TBI): TBI occurs due to head trauma, leading to brain dysfunction. Treatment involves immediate medical attention, rest, and rehabilitation.

68. Traumatic Pneumothorax: Traumatic pneumothorax is a collapsed lung caused by chest trauma. Medical intervention, such as chest tube insertion, may be necessary to reinflate the lung.

69. Traveler’s Diarrhea: Traveler’s diarrhea is a common gastrointestinal illness experienced during travel, often due to contaminated food or water. Hydration and over-the-counter medications can help manage symptoms.

70. Treacher Collins Syndrome: Treacher Collins Syndrome is a genetic disorder affecting facial development, leading to distinct facial features. Surgical interventions may be considered to address functional and cosmetic concerns.

71. Trench Fever: Trench fever is a bacterial infection transmitted by body lice. It can cause fever, headache, and muscle pain.

72. Trench Mouth: Trench mouth, also known as acute necrotizing ulcerative gingivitis, is a severe gum infection often associated with poor oral hygiene and stress. Proper dental care and antibiotics are used to treat trench mouth.

73. Trichinellosis: Trichinellosis is a parasitic infection caused by consuming raw or undercooked meat, especially pork. Treatment involves antiparasitic medications.

74. Trichinosis: Trichinosis is another term for trichinellosis, caused by the Trichinella parasite.

75. Trichomonas Infection: Trichomonas infection, or trichomoniasis, is a common sexually transmitted infection caused by the Trichomonas vaginalis parasite. It requires medical treatment with antiprotozoal medications.

76. Trichomoniasis: Trichomoniasis is another term for a trichomonas infection.

77. Trichotillomania: Trichotillomania is a mental health disorder characterized by an irresistible urge to pull out one’s hair, leading to hair loss. Behavioral therapy and support can help manage trichotillomania.

78. Trichuriasis (Whipworm infection): Trichuriasis is an intestinal infection caused by whipworms. Anthelmintic medications can treat the infection.

79. Tricuspid Atresia: Tricuspid atresia is a congenital heart defect where the tricuspid valve is missing or abnormally developed. Surgical interventions are necessary to improve blood flow to the lungs.

80. Trigeminal Neuralgia: Trigeminal neuralgia is a chronic pain condition affecting the trigeminal nerve, causing intense facial pain. Medications and nerve blocks are used to manage trigeminal neuralgia.

81. Trigger Finger: Trigger finger is a condition where a finger becomes stuck in a bent position, often requiring finger exercises or corticosteroid injections for relief.

82. Trigger Thumb: Trigger thumb is a condition similar to trigger finger, but affecting the thumb instead. Treatments are similar to trigger finger treatments.

83. Trouble Breathing: Trouble breathing can result from various medical conditions, such as asthma, pneumonia, or heart failure. Immediate medical attention is necessary for severe breathing difficulties.

84. Truncus Arteriosus: Truncus arteriosus is a rare congenital heart defect where a single large blood vessel arises from both ventricles. Surgical correction is needed in early infancy.

85. Tuberculosis: Tuberculosis (TB) is a bacterial infection affecting the lungs, but it can also affect other organs. Proper treatment with antibiotics is crucial to cure TB and prevent its spread.

86. Tuberous Sclerosis Complex (TSC): TSC is a genetic disorder characterized by the growth of noncancerous tumors in various organs, including the brain, skin, kidneys, and heart. Treatment focuses on managing symptoms and complications associated with the condition.

87. Tubular Acidosis: Renal tubular acidosis is a group of kidney disorders where the kidneys have difficulty maintaining the body’s acid-base balance. Treatment depends on the specific type of tubular acidosis.

88. Tularaemia: Tularaemia, also known as rabbit fever, is a rare bacterial infection usually acquired through contact with infected animals or tick bites. Antibiotics are effective in treating tularaemia.

89. Twin-to-Twin Transfusion Syndrome: Twin-to-twin transfusion syndrome (TTTS) is a complication of monochorionic twin pregnancies where blood flow imbalances occur between the twins. Close monitoring and medical intervention may be necessary to improve outcomes.

90. Tympanic Membrane Perforation: Tympanic membrane perforation, commonly known as a ruptured eardrum, can result from injuries, infections, or changes in air pressure. In most cases, the perforation heals on its own, but medical attention is necessary for severe cases.

91. Type 1 Diabetes: Type 1 diabetes is an autoimmune condition where the body’s immune system attacks the insulin-producing cells in the pancreas. Individuals with type 1 diabetes require insulin therapy to manage blood sugar levels.

92. Type 2 Diabetes: Type 2 diabetes is a metabolic disorder characterized by insulin resistance and high blood sugar levels. Lifestyle changes, medications, and insulin therapy may be used to manage type 2 diabetes.

93. Typhoid and Paratyphoid Fever: Typhoid and paratyphoid fever are bacterial infections caused by Salmonella typhi and Salmonella paratyphi, respectively. Proper hygiene and vaccination are essential in preventing these diseases.

94. Typhoid Fever: Typhoid fever is a severe bacterial infection caused by Salmonella typhi, typically transmitted through contaminated food and water. Antibiotics are used for treatment.

95. Typhus: Typhus is a group of infectious diseases caused by bacteria transmitted through lice, fleas, or mites. Treatment involves antibiotics and addressing the underlying cause.


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

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 U
  • Diseases That Start With V
  • Diseases That Start With W
  • Diseases That Start With X

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