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Discussion on Bump from Fly Bite on Ear - Nodular Necrobiosis?

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Melissa Webster
Member
Username: Mwebster

Post Number: 354
Registered: 5-2001
Posted on Saturday, Aug 23, 2003 - 3:33 pm:   Edit PostPrint Post

Dear DrO,

My mare developed a large bump on her ear about a month ago that I think was from a fly bite, it appeared instantaneously, was itchy, etc.

It's about 1/2 inch wide, is hard, not warm, sensitive, or itchy, and feels like it's part of the skin tissue, not something deeper. It hasn't reduced on its own. Should I treat it (per the recommendation in the article) or just be patient? Here's what it looks like.

Thanks!
Melissa
ear bump
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Robert N. Oglesby DVM
Moderator
Username: Dro

Post Number: 8990
Registered: 1-1997
Posted on Monday, Aug 25, 2003 - 7:40 am:   Edit PostPrint Post

Usually we don't recommend treatment for fly bite bumps unless they persist for several months but I am uncertain from your picture that is a fly bite reaction, it is much larger than any I have seen.
DrO
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Melissa Webster
Member
Username: Mwebster

Post Number: 355
Registered: 5-2001
Posted on Monday, Aug 25, 2003 - 1:03 pm:   Edit PostPrint Post

Thank you DrO. The photo is a closeup, about 2x actual size. The bump is 1/2" across. Here's another picture, for scale.
Melissa


ear bump 2
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Robert N. Oglesby DVM
Moderator
Username: Dro

Post Number: 9004
Registered: 1-1997
Posted on Wednesday, Aug 27, 2003 - 8:47 am:   Edit PostPrint Post

Its still a big one.
DrO
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Melissa Webster
Member
Username: Mwebster

Post Number: 356
Registered: 5-2001
Posted on Wednesday, Aug 27, 2003 - 9:00 am:   Edit PostPrint Post

Yes, still a big one. The article says "these bumps are as large as a half inch, round, smooth, hard, usually hairless, and frequently have a small pit or hole in the center usually with a scab over it." I think that's how it looks, and it's 1/2". Does it look like nodular necrobiosis to you?
Thanks,
Melissa
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Robert N. Oglesby DVM
Moderator
Username: Dro

Post Number: 9005
Registered: 1-1997
Posted on Wednesday, Aug 27, 2003 - 10:31 am:   Edit PostPrint Post

The pit (I can see it in the top picture) is very strong evidence of nn. Unless it is a melanoma that was bit by a big fly.

Why don't you have your vet look and if he agrees go ahead and slip 5 to 10 mg methylpred (Depo-Medrol) under it. It looks like one that will persist if you don't treat it.
DrO
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Melissa Webster
Member
Username: Mwebster

Post Number: 382
Registered: 5-2001
Posted on Friday, Oct 10, 2003 - 3:32 pm:   Edit PostPrint Post

Yes, one big fly all right!

Well, I had a vet look at it the week after posting when my mare had to be seen to for her hock, and the vet suggested I give her 1m Ledum pills (homeopathic remedy)(!) Amazingly, within a week, the thing started to substantially decrease in size, and now it's nearly gone.

Of course, I never gave her any Ledum pills, though if I were a "believer" in homeopathic stuff, and had given her some, it would've seemed like "proof"... Maybe the SMZ for her hock infection had some effect. Or maybe her system was finally ready to deal with this big ole bite!

M
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