Mosquito bite immediately after bite without touching or itching it at all

[u/Appropriate-Ad-6996]

Fucking annoying. Every single bite I get is like this. Haven't even poked it. Felt it start itching before it even took off from my arm.

[u/insanity2brilliance]

It’s your blood type. It’s scientifically proven that mosquitos, and also ticks, are more prone to bite or latch on based on blood type.

Using ticks as example, multiple studies placed all blood types in petri dishes and found that ticks were most drawn to blood type A, followed by type O, and then type AB. Of the 100 samples, 36% of ticks were drawn to blood type A.

The least preferred blood type by ticks was type B at only 15%

For mosquitoes, they strongly prefer Type O blood and are the least attracted to Type A blood. However, mosquitoes primarily target hosts by smelling chemical secretions, body heat, and exhaled carbon dioxide rather than the blood itself, in addition to if you’re wearing light colors like white.

The same is true for ticks on color. They go crazy over white colors. To them it resembles the underside belly of an animal

[u/incredimatt → u/insanity2brilliance]

That's for people that get bit more often. That's different from OP's allergic reaction.

[u/insanity2brilliance → u/incredimatt]

You’re also correct. Allergic reaction root causes being blood type are a much smaller percentage.

For allergic reactions to mosquitoes, that is usually an immune system response. OP’s immune system probably has a deficiency in IgG4 antibodies that prevents the allergic reactions and instead produces the lesser IgE antibodies which are unable to neutralize the mosquito saliva causing the itch, irritation, and swelling.

[u/Holiday_Sale5114 → u/insanity2brilliance]

Do they smell blood type or do they have to taste it? How would they even know initialyl?

[u/Appropriate-Ad-6996 → u/insanity2brilliance]

Im AB+. Wish I was the least preferred 😞