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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes A Dark Crust Like Patch On Knuckle Of Right Index Finger?

I have a dark, crust-like patch on my knuckle on my right index finger. It has been there for a while. It may still be my eczema but most of that has cleared up. My other fingers are just fine. I ve tried almost everything. Other than eczema, what could this be?
posted on Mon, 23 Jun 2014
Twitter Sun, 3 Jan 2016 Answered on
Twitter Tue, 5 Jan 2016 Last reviewed on
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Dentist,  's  Response

Hi Dear,

Welcome to HCM.

Understanding your concern. As per your query you have dark crust like patch on knuckle of right index finger. Well there can be many reasons for symptoms you mention in query like sunburn or another kind of burn , infections , lupus erythematosus , dermatomyositis , hormonal changes or seasonal allergy . I would suggest you to apply petroleum jelly , avoid applying any other cosmetic , keep it clean and dry and take anti histamine like benadryl . If condition doesn't get better then consult dermatologist for proper examination . Doctor may prescribe immunosuppressants , corticosteroid ointment or antibiotics .

Hope your concern has been resolved.

Get Well Soon.

Best Wishes,
Dr. Harry Maheshwari
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What Causes A Dark Crust Like Patch On Knuckle Of Right Index Finger?

Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have dark crust like patch on knuckle of right index finger. Well there can be many reasons for symptoms you mention in query like sunburn or another kind of burn , infections , lupus erythematosus , dermatomyositis , hormonal changes or seasonal allergy . I would suggest you to apply petroleum jelly , avoid applying any other cosmetic , keep it clean and dry and take anti histamine like benadryl . If condition doesn t get better then consult dermatologist for proper examination . Doctor may prescribe immunosuppressants , corticosteroid ointment or antibiotics . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari