Allergies are a common health condition that affects millions of people worldwide. An allergy occurs when the immune system overreacts to a harmless substance, known as an allergen. These allergens can vary greatly and may be found in foods, medications, animals, and environmental factors. In this article, we will explore 117 common allergies and their effects on individuals.

1. Pollen: Pollen allergies, also known as hay fever or allergic rhinitis, are triggered by the release of pollen from trees, grasses, and weeds. Symptoms may include sneezing, runny or stuffy nose, itchy or watery eyes, and coughing.

2. Dust mites: Dust mite allergies are caused by tiny insects that live in bedding, upholstery, and carpets. Symptoms can range from sneezing and itching to more severe respiratory problems such as wheezing and asthma attacks.

3. Mold: Mold allergies are triggered by exposure to mold spores that are commonly found in damp areas. Symptoms may include nasal congestion, eye irritation, coughing, and skin rashes.

4. Pet dander: Many people are allergic to pet dander, which consists of microscopic pieces of skin, saliva, or urine. Exposure to pet dander can cause allergic reactions such as sneezing, itchy skin, and respiratory issues.

5. Insect stings: Allergies to insect stings, particularly from bees, wasps, and hornets, can cause severe reactions, known as anaphylaxis. Symptoms may include swelling, hives, difficulty breathing, and in extreme cases, loss of consciousness.

6. Food allergies: Food allergies occur when the immune system reacts to certain proteins found in certain foods. Common food allergens include peanuts, tree nuts, eggs, milk, soy, wheat, fish, and shellfish. Symptoms can range from mild skin rashes to life-threatening anaphylaxis.

7. Drug allergies: Some individuals may develop allergies to certain medications, such as antibiotics (penicillin), nonsteroidal anti-inflammatory drugs (NSAIDs), and anesthetic agents. Allergic reactions can range from skin rashes to more severe symptoms such as difficulty breathing and swelling.

8. Latex: Allergies to latex, a natural rubber used in various products, can cause skin rashes, hives, and in some cases, anaphylaxis. Individuals who are frequently exposed to latex, such as healthcare workers, are more prone to developing this allergy.

9. Nickel: Nickel allergies are common among individuals who wear jewelry or use metallic objects containing nickel. Symptoms may include redness, itching, and swelling at the site of contact.

10. Fragrance: Fragrance allergies can cause skin reactions such as redness, itching, and rashes. Common triggers include perfumes, colognes, and scented cosmetics.

11. Sunscreen: Certain individuals may develop allergic reactions to sunscreen ingredients, resulting in skin irritation, redness, and itching.

12. Cosmetics: Allergies to cosmetics, such as makeup, lotions, and hair products, can lead to skin rashes, redness, and swelling.

13. Latex fruit syndrome: Some individuals with latex allergies may also develop allergies to certain fruits and vegetables, such as bananas, avocados, kiwis, and tomatoes. Symptoms may include itching, swelling, and difficulty breathing.

14. Peanut: Peanut allergies are among the most common food allergies and can cause severe reactions, including anaphylaxis. Strict avoidance of peanuts and peanut products is necessary for individuals with this allergy.

15. Tree nuts: Allergies to tree nuts, such as almonds, walnuts, and cashews, can cause similar allergic reactions to peanut allergies. Strict avoidance is crucial in preventing reactions.

16. Fish: Fish allergies are common and can lead to severe reactions, including anaphylaxis. Individuals with fish allergies must avoid all types of fish and fish-derived ingredients.

17. Shellfish: Shellfish allergies can cause severe reactions and are common among adults. Avoidance includes all types of shellfish, including shrimp, lobster, and crab.

18. Milk: Milk allergies are most common in infants and young children. Symptoms can range from mild gastrointestinal discomfort to severe reactions such as anaphylaxis. Individuals with milk allergies must avoid all dairy products.

19. Egg: Egg allergies are also commonly found in children and often outgrown by adulthood. Avoiding eggs and egg-derived ingredients is crucial for those with this allergy.

20. Soy: Soy allergies can cause allergic reactions ranging from mild to severe, including anaphylaxis. Strict avoidance of soy and soy-derived products is essential.

21. Wheat: Allergies to wheat are distinct from gluten intolerance or celiac disease. Wheat allergies can cause gastrointestinal symptoms, skin rashes, and in some cases, anaphylaxis.

22. Sesame: Sesame allergies are becoming increasingly recognized as a potential allergen. Symptoms may range from mild skin rashes to severe reactions.

23. Mustard: Mustard allergies can cause allergic reactions such as skin rashes, itching, and in severe cases, anaphylaxis.

24. Corn: Corn allergies are relatively rare but can cause gastrointestinal symptoms, skin rashes, and respiratory issues in affected individuals.

25. Kiwi: Kiwi allergies can cause oral symptoms such as itching and swelling of the lips and tongue, as well as more severe reactions in some individuals.

26. Banana: Banana allergies can lead to oral symptoms similar to kiwi allergies, as well as skin rashes and gastrointestinal discomfort.

27. Avocado: Avocado allergies are relatively rare but can cause oral symptoms, skin reactions, and gastrointestinal distress in affected individuals.

28. Tomato: Tomato allergies may cause oral symptoms, as well as skin rashes and gastrointestinal discomfort in sensitized individuals.

29. Apple: Apple allergies can cause oral symptoms known as oral allergy syndrome, as well as skin rashes and gastrointestinal distress.

30. Celery: Allergies to celery can lead to oral symptoms, skin rashes, and gastrointestinal discomfort in affected individuals.

31. Carrot: Carrot allergies may manifest as oral symptoms, skin rashes, and gastrointestinal distress in sensitized individuals.

32. Strawberry: Strawberry allergies can cause skin rashes, itching, and in some cases, respiratory issues in allergic individuals.

33. Pineapple: Pineapple allergies can cause oral symptoms and skin rashes in sensitized individuals.

34. Orange: Orange allergies may result in oral symptoms, skin rashes, and gastrointestinal discomfort in affected individuals.

35. Melon: Melon allergies can lead to oral symptoms, skin rashes, and gastrointestinal distress in allergic individuals.

36. Grape: Grape allergies may manifest as skin rashes, itching, and gastrointestinal discomfort in sensitized individuals.

37. Peaches: Peach allergies can cause oral symptoms, skin rashes, and gastrointestinal distress in affected individuals.

38. Pear: Pear allergies may result in oral symptoms, skin rashes, and gastrointestinal discomfort in sensitized individuals.

39. Plum: Plum allergies can lead to oral symptoms, skin rashes, and gastrointestinal distress in allergic individuals.

40. Apricot: Apricot allergies may manifest as oral symptoms, skin rashes, and gastrointestinal discomfort in sensitized individuals.

41. Cherry: Cherry allergies can cause skin rashes, itching, and gastrointestinal discomfort in affected individuals.

42. Blueberry: Blueberry allergies may result in skin rashes, itching, and gastrointestinal distress in sensitized individuals.

43. Raspberry: Raspberry allergies can lead to skin rashes, itching, and gastrointestinal discomfort in allergic individuals.

44. Blackberry: Blackberry allergies may manifest as skin rashes, itching, and gastrointestinal distress in sensitized individuals.

45. Strawberry: Strawberry allergies can cause skin rashes, itching, and gastrointestinal discomfort in affected individuals.

46. Hazelnut: Hazelnut allergies may result in oral symptoms, skin rashes, and gastrointestinal distress in sensitized individuals.

47. Walnut: Walnut allergies can lead to oral symptoms, skin rashes, and gastrointestinal discomfort in allergic individuals.

48. Almond: Almond allergies may manifest as oral symptoms, skin rashes, and gastrointestinal distress in sensitized individuals.

49. Cashew: Cashew allergies can cause skin rashes, itching, and gastrointestinal discomfort in affected individuals.

50. Pistachio: Pistachio allergies may result in skin rashes, itching, and gastrointestinal distress in sensitized individuals.

51. Coconut: Coconut allergies can lead to skin rashes, itching, and gastrointestinal discomfort in allergic individuals.

52. Peanut oil: Some individuals may develop allergies to peanut oil, which can cause similar allergic reactions as peanut allergies.

53. Sesame oil: Sesame oil allergies can lead to skin rashes, itching, and in some cases, anaphylaxis.

54. Soy lecithin: Soy lecithin allergies may manifest as skin rashes, itching, and gastrointestinal distress in sensitized individuals.

55. Wheat germ: Wheat germ allergies can cause gastrointestinal symptoms, skin rashes, and respiratory issues in affected individuals.

56. Tree nut oils: Allergies to tree nut oils, such as almond or walnut oil, can cause similar allergic reactions as tree nut allergies.

57. Coconut oil: Coconut oil allergies may lead to skin rashes, itching, and gastrointestinal discomfort in allergic individuals.

58. Milk derivatives: Some individuals with milk allergies may also develop allergies to milk derivatives, such as lactose or casein. Avoidance is crucial to prevent allergic reactions.

59. Cheese: Cheese allergies can cause allergic reactions such as skin rashes, itching, and gastrointestinal discomfort in sensitized individuals.

60. Yogurt: Yogurt allergies may manifest as skin rashes, itching, and gastrointestinal distress in allergic individuals.

61. Ice cream: Ice cream allergies can lead to skin rashes, itching, and gastrointestinal discomfort in affected individuals.

62. Butter: Butter allergies may result in skin rashes, itching, and gastrointestinal distress in sensitized individuals.

63. Margarine: Margarine allergies can cause skin rashes, itching, and gastrointestinal discomfort in allergic individuals.

64. Mayonnaise: Allergies to mayonnaise can lead to skin rashes, itching, and gastrointestinal distress in sensitized individuals.

65. Shellfish derivatives: Some individuals with shellfish allergies may also develop allergies to shellfish derivatives, such as shrimp or crab extracts. Avoidance is crucial to prevent allergic reactions.

66. Fish derivatives: Allergies to fish derivatives, such as fish or fish oil extracts, can cause similar allergic reactions as fish allergies.

67. Gelatin: Gelatin allergies can cause skin rashes, itching, and gastrointestinal discomfort in affected individuals.

68. Monosodium glutamate (MSG): Allergies to MSG can lead to skin rashes, itching, and gastrointestinal distress in allergic individuals.

69. Sulfites: Sulfite allergies may manifest as skin rashes, itching, and gastrointestinal discomfort in sensitized individuals. These additives are commonly found in foods and beverages, such as wines, dried fruits, and processed meats.

70. Gluten: Gluten allergies are distinct from celiac disease but can still cause gastrointestinal symptoms, skin rashes, and in some cases, anaphylaxis.

71. Caffeine: Caffeine allergies can lead to symptoms such as headaches, heart palpitations, and gastrointestinal discomfort in sensitized individuals.

72. Alcohol: Some individuals may develop allergies to specific types of alcohol, resulting in symptoms such as flushing, nasal congestion, and skin rashes.

73. Red food coloring: Allergies to red food coloring, such as cochineal extract, can cause skin rashes and itching in sensitized individuals.

74. Yellow food coloring: Yellow food coloring allergies may manifest as skin rashes, itching, and gastrointestinal distress in allergic individuals.

75. Blue food coloring: Allergies to blue food coloring can lead to skin rashes, itching, and gastrointestinal discomfort in sensitized individuals.

76. Green food coloring: Green food coloring allergies may result in skin rashes, itching, and gastrointestinal distress in allergic individuals.

77. Orange food coloring: Allergies to orange food coloring can cause skin rashes, itching, and gastrointestinal discomfort in sensitized individuals.

78. Artificial sweeteners: Allergies to artificial sweeteners, such as aspartame or saccharin, can lead to skin rashes, itching, and gastrointestinal distress in allergic individuals.

79. Sulfates: Sulfate allergies may manifest as skin rashes, itching, and gastrointestinal discomfort in sensitized individuals. These additives are commonly found in processed foods, wines, and medications.

80. Artificial dyes: Allergies to artificial dyes can cause skin rashes, itching, and gastrointestinal discomfort in affected individuals.

81. Preservatives: Allergies to preservatives, such as benzoates or sulfites, can lead to skin rashes, itching, and gastrointestinal distress in sensitized individuals.

82. Antibiotics: Allergies to antibiotics, such as penicillin or sulfa drugs, can cause allergic reactions ranging from skin rashes to more severe symptoms such as difficulty breathing.

83. Nonsteroidal anti-inflammatory drugs (NSAIDs): Some individuals are allergic to NSAIDs, including aspirin or ibuprofen, resulting in symptoms such as skin rashes, swelling, and respiratory issues.

84. Insulin: Allergies to insulin can cause local skin reactions at the injection site or systemic allergic reactions.

85. Anesthetics: Allergies to anesthetic agents, such as lidocaine or propofol, can lead to allergic reactions ranging from skin rashes to more severe symptoms such as difficulty breathing.

86. Latex gloves: Some individuals may develop allergies to latex gloves, leading to skin rashes, itching, and in some cases, anaphylaxis.

87. Adhesive bandages: Adhesive bandage allergies can cause skin rashes, itching, and in some cases, blisters or ulcers at the site of contact.

88. Airborne allergens: Airborne allergens, such as dust, pollen, pet dander, and mold spores, can cause allergies ranging from mild respiratory symptoms to more severe reactions.

89. Chemicals: Allergies to chemicals, such as cleaning products, fragrances, or insecticides, can result in skin rashes, hives, and respiratory issues in sensitized individuals.

90. Smoke: Smoke allergies can cause respiratory symptoms such as coughing, wheezing, and shortness of breath in sensitized individuals.

91. Cold weather: Some individuals may develop allergic reactions to cold weather, resulting in skin rashes, hives, and respiratory issues.

92. Heat: Heat allergies can cause symptoms such as skin rashes, itching, and in some cases, hives or swelling.

93. Sunlight: Allergies to sunlight, known as photosensitivity, can lead to skin rashes, itching, and in some cases, blistering or ulcers.

94. Dust: Dust allergies can cause respiratory symptoms such as sneezing, coughing, and congestion in sensitized individuals.

95. Cockroaches: Allergies to cockroaches can cause allergic reactions such as sneezing, coughing, and in some cases, asthma attacks.

96. Bees: Bee allergies can cause severe reactions, including anaphylaxis, in sensitized individuals. Strict avoidance and carrying an epinephrine auto-injector are crucial for those with this allergy.

97. Wasps: Allergies to wasp stings can lead to severe reactions, including anaphylaxis. Avoidance and carrying an epinephrine auto-injector are necessary for individuals with this allergy.

98. Hornets: Hornet allergies can cause severe allergic reactions, including anaphylaxis, in sensitized individuals. Strict avoidance and carrying an epinephrine auto-injector are crucial for those with this allergy.

99. Fire ants: Allergies to fire ant stings can lead to severe reactions, including anaphylaxis. Avoidance and carrying an epinephrine auto-injector are necessary for individuals with this allergy.

100. Mosquitoes: Some individuals may develop allergic reactions to mosquito bites, leading to skin rashes, itching, and in some cases, large localized swelling.

101. Fleas: Flea allergies can cause skin rashes, itching, and in some cases, severe dermatitis in affected individuals.

102. Dust mites: Dust mite allergies can lead to respiratory symptoms such as sneezing, coughing, and in some cases, asthma attacks.

103. Pets (cats): Cat allergies are common and can cause allergic reactions such as sneezing, itchy eyes, and respiratory issues in sensitized individuals.

104. Pets (dogs): Dog allergies may manifest as allergic rhinitis, skin rashes, and respiratory issues in affected individuals.

105. Pets (horses): Some individuals may develop allergies to horses, resulting in allergic rhinitis, skin rashes, and respiratory issues.

106. Pets (rabbits): Rabbit allergies can cause allergic reactions such as sneezing, skin rashes, and respiratory issues in sensitized individuals.

107. Pets (birds): Bird allergies may manifest as allergic rhinitis, skin rashes, and respiratory issues in affected individuals.

108. Cockatiels: Cockatiel allergies can lead to allergic reactions such as sneezing, skin rashes, and respiratory issues in sensitized individuals.

109. Parrots: Parrot allergies may result in allergic rhinitis, skin rashes, and respiratory issues in affected individuals.

110. Guinea pigs: Guinea pig allergies can cause allergic reactions such as sneezing, skin rashes, and respiratory issues in sensitized individuals.

111. Hamsters: Hamster allergies may manifest as allergic rhinitis, skin rashes, and respiratory issues in affected individuals.

112. Mice: Mice allergies can lead to allergic reactions such as sneezing, skin rashes, and respiratory issues in sensitized individuals.

113. Rats: Rat allergies may result in allergic rhinitis, skin rashes, and respiratory issues in affected individuals.

114. Rabbits: Rabbit allergies can cause allergic reactions such as sneezing, skin rashes, and respiratory issues in sensitized individuals.

115. Equine (horses): Equine allergies may manifest as allergic rhinitis, skin rashes, and respiratory issues in affected individuals.

116. Cattle: Cattle allergies can lead to allergic reactions such as sneezing, skin rashes, and respiratory issues in sensitized individuals.

117. Poultry (chickens): Some individuals may develop allergies to chickens, resulting in allergic rhinitis, skin rashes, and respiratory issues.

In conclusion, allergies are a widespread health concern affecting millions of people worldwide. As evident from the list above, there are various types of allergies, each triggered by different allergens. Recognizing and understanding these common allergies is crucial in managing symptoms and preventing severe reactions. Individuals with known allergies should seek appropriate medical advice, undergo allergen testing, and develop a comprehensive management plan to live a healthy and allergy-free life.