WATCH: Teen's horrifying infected spider bite

An arachnophobic teen was bitten by a spider in her bedroom, resulting in a 2cm-deep wound that saw her rushed to the emergency room.

Courtney Thompson discovered the creepy crawly in her Sussex, England home a week before the bite appeared and called her mum in fear, however the eight-legged terror got away.

Three weeks later, the tiny bite had developed into a wound so deep, the 19-year-old visited doctors who advised her to get to her local hospital – where it was confirmed it was a spider bite.

Stomach-churning footage shows Courtney getting the dressing taken off the bite on Wednesday and huge amounts of pus oozing from the deep, infected wound.

"I couldn't believe it. I was in shock really, and I think I still am," Courtney said.

"I never knew that we had spiders in the UK that could leave a bite that bad and potentially poison me.

"The hole was making me feel a bit sick but when I went back to have the first dressing taken off it made me really squirm."

Because of the infection, the puncture had gone two centimetres into Courtney's flesh.

"The wound is about two centimeters deep and the size of a 50 pence piece," Courtney said.

"It really made me feel sick. It doesn't hurt, but it was painful when they were clearing all the rubbish out of it."

The gruesome injury was even more painful than the aftermath of double hip surgery, Courtney said.

"I've got a high pain threshold and I even had double hip surgery when I was younger and I think this is worse than that," she revealed.

"I don't know where the spider came from. All I can think is that there was a spider in my room a week or so before the mark appeared.

"I called my mum and asked her to move it as I'm petrified of them but it had disappeared before she got to it.

"I haven't been abroad so it was definitely a spider in the UK that has done this."

The care assistant has been back to the hospital three times to have the bite cleaned and all the pus removed from it. She is also on antibiotics to help fight the infection.

Her family have been searching the house to make sure that the spider isn't still lurking in there.

"I had a red lump on the bottom of my leg and I thought it was nothing," Courtney said.

"After a couple of weeks, it started to sink in a bit and as I am a type one diabetic I knew I needed to go and get it looked at.

"I was sent straight to A&E from the doctors and I was told by three nurses and a doctor that I had been bit by a spider and it was infected.

"My first dressing was a plaster that pulled all of the poison and pus out of the wound.

"When they pulled that dressing off it was disgusting."

Courtney was horrifed to learn that the doctors needed to extract the pus from the wound.

"They then had to try and pull all the pus out of it, which was very uncomfortable.

"They gave me another dressing and then I went back four days later and had the wound cleaned and re-dressed again.

"Hopefully if I look after it and get it checked regularly it will heal and just leave a small scar.

"I'm even more petrified of spiders now. I hope if it was the one I saw in my bedroom it has moved on."

Additional reporting by Caters.

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