Reason For Lumps Recurring On The Face Which Is Very Itchy

For the past 6 months or so I have a couple recurring lumps on my face which present themselves exactly like a mosquito bite about 3 cm. One is below my right eye and the other is on the right side of my forehead. They are in exactly the same place everytime, red, raised and itchy. The surrounding area is quite pink as well. It sometimes happens on a weekly basis, other times with several weeks in between. In the beginning they would come and go very quickly, within the day but lately it is taking 2-3 days to go although the itching subsides quicker. The very first time it happend, it was below my eye and I thought it was a spider bite, since it is so similar to one. The next time it happened I thought it was a coicidence but found it hard to believe a spider had bitten me in the same place. After the third time I realized it was something else. Any ideas?