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When you see erosions or ulcers, always consider vesicobullous in the ddx.
| • | deep fungal (e.g. blastomycosis) |
|
| • | spider bite (brown recluse) |
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Genital Ulcer
Perineal Ulcer ddx:
| • | metastatic Crohn's disease (non-caseating granulomas) |
| • | orificial TB (caseating granulomas) |
|
Leg Ulcers:
Other Ulcers:
| • | cryoglobulinemia (clinically = BPP with small ulcers) |
| • | diabetes mellitus, syringomyelia, lepromatous leprosy, hereditary neuropathy of Denny-Brown |
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Vascular disease (“punched out ulcer right up to normal skin”)
| • | e.g. DM, sickle cell, arteriosclerosis |
Inflammatory inflamed skin at border, can probe under the red skin
| • | e.g. pyoderma gangrenosum |
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