Itchy Red Bumps
After a gnat bite, you may develop small, itchy red bumps that can sometimes swell up. These bumps are a result of an allergic reaction to the bite and are one of the most common symptoms of a gnat allergy.
Welts or Hives
In some people, the allergic reaction can be more severe, causing welts or hives to form. These are large, itchy bumps that can appear anywhere on the body. They usually go away on their own but can cause discomfort and may require treatment if severe.
Swelling
Swelling is another common reaction to gnat bites. The site of the bite may swell up, causing redness and discomfort. This can get worse if the bite is scratched or if the person has a severe allergy.
Blisters
In some cases, blisters filled with fluid can form at the site of the gnat bite. This usually indicates a more severe allergic reaction and requires medical attention to prevent infection and other complications.
Allergic Conjunctivitis
If gnats fly into your eyes, they can cause allergic conjunctivitis. This condition is marked by red, itchy, and watery eyes, and can be accompanied by blurred vision and sensitivity to light.
Respiratory Issues
For some people, gnat allergy can lead to respiratory problems. This is characterized by wheezing, coughing, and shortness of breath, and may require immediate medical attention.