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Spider Bite?

I have had 4 different occurrences of whatever this is since the beginning of April.  

there have been either 2 or 3 different spots each time.  the first 3 times they were on my arms, and this time they are on my thigh.  people think they are spider bites and i even went to the doctor once when they were healing and she sat 5 feet away from me and told me thats what they looked like.  i dont think spider bites are that common - to have 10 in 3 1/2 - 4 months?

anyways - these spots are hard in the center and it feels bumpy - sometimes the bumps appear to be a pattern, sometimes they do not.  the center area (bumpy area) is surrounded by a large red area - these areas have been as small as a quarter - some about the size of the diameter of a pool ball.  They do not hurt - but they do itch.  

They usually last 4-5 days then they are gone.  when they are healing they are still red in the center, then the skin looks normal, then there is an outter red ring.

I have had my place exterminated - although my roommate and friend that is here every weekend have not had any issues.  Does this sound familiar to anyone?
2 Responses
563773 tn?1374246539
MEDICAL PROFESSIONAL
Hello,
I cannot confirm anything without examination but it can be pityriasis rosea,nummular dermatitis or ringworm.
Pityriasis rosea is a common human skin disease which presents as numerous patches of pink or red oval rash. The rash may be accompanied by low-grade headache, fever, nausea and fatigue and sometimes by itching.

No treatment is usually required. In most patients, the condition lasts only a matter of weeks or months(upto six months).In svere cases topical and oral steroids may be needed.

If the rash persists then it will be best to get it evaluated from a dermatologist.Other possibilities have to be ruled out then

Avatar universal
They look like bedbug bites. Change your sheets, and apply anti-itch cream.
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