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Dr. Andrew Rynne

Family Physician

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What Causes Itchy Bump On The Neck?

I have an itchy hard bump bite on my neck, right along my bottom jaw line. It s been there for almost 2 weeks. It doesn t hurt. When I touch it, it s itchy and there s a hard bump in there the size of a chic pea. I thought it was a mosquito bite when I woke up....... but I m thinking if it s something else that bit me, perhaps a spider?!?!?!
posted on Wed, 9 Jul 2014
Twitter Mon, 28 Jul 2014 Answered on
Twitter Wed, 30 Jul 2014 Last reviewed on
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Dermatologist,  's  Response
Hi
Welcome to Healthcare Magic Forum

Looks like you have developed a lesion of Vector dermatitis, also known as Paederus dermatitis..
Paederus dermatitis is a peculiar, irritant contact dermatitis characterized by a sudden onset of red lesions on exposed areas of the body.
The disease is provoked by an insect belonging to the genus Paederus.
You need to apply an antibiotic/steroid combination cream over the lesion twice a day.
Take oral antihistamine like levocetrizine once a day to decrease the swelling.

Do not use any moisturizer or oils till the time the lesion heals .
If the lesions continue to increase inspite of the above treatment, then you might have to see a dermatologist as in severe cases, short term courses of oral antibiotics or oral steroids may be required.

Hope it helps
Wishing you speedy recovery
Dr Geetika Paul
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What Causes Itchy Bump On The Neck?

Hi Welcome to Healthcare Magic Forum Looks like you have developed a lesion of Vector dermatitis, also known as Paederus dermatitis.. Paederus dermatitis is a peculiar, irritant contact dermatitis characterized by a sudden onset of red lesions on exposed areas of the body. The disease is provoked by an insect belonging to the genus Paederus. You need to apply an antibiotic/steroid combination cream over the lesion twice a day. Take oral antihistamine like levocetrizine once a day to decrease the swelling. Do not use any moisturizer or oils till the time the lesion heals . If the lesions continue to increase inspite of the above treatment, then you might have to see a dermatologist as in severe cases, short term courses of oral antibiotics or oral steroids may be required. Hope it helps Wishing you speedy recovery Dr Geetika Paul