I have a male friend and he thinks he got bit by a spider two or three different times. All his bites are red and swollen he had a red line coming from one of them he is taking antibiotics right now they seem a little better, but for the past couple weeks he said his vision has been blurred and soreness in his joints, lack of energy, upset stomach and he said his kidneys hurt can anyone tell me what it could be thank you.

He should talk to a doctor. Good luck

See someone immediately. That red line is a sign of blood poisoning. Been there, done that, when I was about 6.

I was told the line should be kept from reaching the heart.

ASAP, soak the bites in Epsom salts and warm water.