| Scleroderma (systemic sclerosis) |
| Lipodermatosclerosis |
| Eosinophilic fasciitis |
| Trauma-induced |
| Fat nephrogenic systemic fibrosis necrosis (intramuscular injections) |
| Chronic graft-versus-host disease |
| Lichen sclerosus |
| Pretibial myxedema |
| Connective tissue nevi |
| Morpheaform basal cell carcinoma |
| Chemical mediated sclerosing skin conditions (toxic oil syndrome, rapeseed oil, etc.) |
| Lyme disease (acrodermatitis atrophicans) |
| Phenylketonuria |
| Scleromyxedema, scleroderma chronic, pretibial myxedema |
| POEMS syndrome |
| Exclude in pertinent setting |
| Carcinoma of the breast metastatic to skin (carcinoma en cuirasse) |
| Porphyria cutanea tarda |
