What has bitten me? Warning: pic's included

[MyCatsAreFuckwits]

Felt an itch while out last night, located on inside calf, where seam of skinny jeans lies.
Took off jeans about 11:30 and noticed a very small bite. Took oral antihistamine and bathed area.
Small blister had developed by morning, also red and rather warm. Pen marked edge of red area at 8:30am
This is it now, 24 hours after first feeling the itch.
Any ideas of the critter that caused this?

A horsefly?

Spider?
Some mozzies if you’re sensitive to bites.
Horsefly bites are extremely painful and very itchy.

Could be anything really. Mosquito, midge, flea, tick...

How do you usually react to insect bites?

@Crackwillow

I had been wearing my jeans all day, they are tight. I'm not sure on could have got so far up/down my leg. I do react in this way to horseplay though. Good suggestion x

Could be a Blandford fly, they tend to blister.

Horsefly horrible evil beasties. Get to the pharmacy tomorrow.
Edited to add that they can bite through clothes too, I googled them after one really bad bite and they have a razor like chomp.

Horse flying can manifest differently including swelling and a dot like lump but the pic I have included is typical. Looks very much like yours

@Smartiepants79
@yhk

I do react to mosquito like this, I'm in Northern England.
I suppose it could be a mosquito.
My cats had killed a rather large spider in the home the night before 😬
Not spiders in my jeans 😭

It's an allergic reaction to a mosquito bite.. definitely.
My sister had one.
Antihistamines and some hydrocortisone cream.

Horseflys can get through clothes if they are determined to get a bite in.

@NippyCrab
God God, through clothes. 😐
@ClareBlue
Thank, you. Very similar.
I have been bitten by one before and it hurt (while it was on me) my skin reacted in the same way 😒

Horse fly
I react in a similar if more extreme way. Do your utmost not to scratch/burst the blister. IME they are very prone to getting infected

@Moier
I have only reacted like this to mosquitoes while abroad.
I took antihistamine as soon as I got home and again today x

Could be a reaction to hogweed?

It might be plague.

@ploberby
Definitely not hogweed, not been out of the city yesterday. It does grow in the countryside nearby.

Mosquitos will do that to me.

I react horribly to insect bites and some blisters are easily 2cm across

@Daphnis156
I would take the plague over creature bites 😂

@Elphame
It's rubbish, poor you.
I hope you have a bite free summer x

@firef1y
Yes, I will try by best not to let the blister burst. x

I got one like that on my ankle from a tiger mosquito in Northern France last year. Ended up having to get it drained, antibiotics, the works. Stupid mozzies.

I got bitten by mosquitos in Sweden one summer as they're rife in the North mlssy stretches and we were hiking so no escape. A few of my bites went like that, bug blister exactly like yours with the allergic reaction swelling round.

Yeah, mossie bite. I do that with the little tiger bastards in Italy and France. Never been bitten here though! I do react to midges here.

I react like that to horseflies