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I have round blue spots on my legs today...(they look like

Customer Question
bingo dabber spots). I also...
I have round blue spots on my legs today...(they look like bingo dabber spots). I also have bumps under my skin on my legs. Sometimes they are very painfull but it's the blue spots that are new today
Submitted: 6 years ago.Category: Dermatology
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Answered in 12 hours by:
2/4/2011
Dermatologist: Dr. Nair, Dermatologist replied 6 years ago
Dr. Nair
Dr. Nair, Dermatologist
Category: Dermatology
Satisfied Customers: 9,191
Experience: MBBS, MD (Dermatology, Venereology & Leprology)
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Hi,

How long have you been getting these bumps? How long do individual bumps last?

DO you have any significant medical history?
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Customer reply replied 6 years ago
I have been getting these bumps for about 8 years. The new blue spots just happened yesterday. They last sometimes in the past about 6 months but lately they come and go every 6 months or so (the lumps). I have had hep c for 23 years but just had biopsy last year and no liver damage so far. The blue spots are gone now. I think the bumps are called Erytheme Nodosum but it was the perfectly round blue spots (size of a dime) that got me nervous.
Dermatologist: Dr. Nair, Dermatologist replied 6 years ago
I hope you find our interaction helpful. If you are satisfied with my response(s) please remember to press the ACCEPT button.

Thank you for the information, that is exactly what I was suspecting. Erythema nodosum (EN) is a type of skin reaction pattern that is caused by inflammation of the underlying fat (panniculitis). It can be classified as acute or chronic. Acute EN appear as recurrent crops of painful red bumps primarily over the extremities that subside in a few days to few weeks. This is followed by an asymptomatic period of varying duration. The lesions then recur.

Chronic Hepatitis C infection is one of the main causes of long standing ENL. However just to be sure we don't miss anything here are other common causes:

1. Infection like streptococcal sore throat, tuberculosis, leprosy, systemic fungal infections, diarrhoea due to salmonella or shigella or other rarer systemic infections. 2. Sarcoidosis 3. Inflammatory bowel disease 4. Drugs - oral contraceptives, hormone replacement therapy, sulphonamides, bromides. 5. Hematological Malignancies.

Blue/Violaceous spots can occur in EN. Don't worry about them.

Hope this information was useful!
Dr. Nair
Dr. Nair, Dermatologist
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