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cut on finger developed fluid blister

My husband is a type 2 diabetic and he was washing dishes, while rinsing a low ball glass it broke causing 3 small cuts on his finger. we washed it with peroxide and put a bandage on it. the next day the finger developed a fluid filled blister on the back of the finger tip, it ruptured and we applied peroxide again but let it air dry with some antiseptic cream. now it is so dry and weird looking. he says it doesn't irritate, hurt or itch. he does suffer from eczema.  What should we do?
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Avatar universal
That's exactly what it is doing since my post. He panics everytime something happens and will ask me what to do. Thanks.
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4851940 tn?1515694593
Keep the area clean and leave it alone.  The blister will have dried and formed a scab and this will fall off when the skin underneath is healed.

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way off the beaten track!, BC
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