Morphea subtype | Modifiers | Clinical |
Circumscribed | Superficial | Single or multiple oval/round lesions limited to epidermis and dermis |
Deep | Single or multiple oval/round lesions involving subcutaneous tissue, fascia or muscle | |
Linear | Trunk/limbs | Linear lesions involving possible primary site of involvement in subcutaneous tissue without involvement of skin, dermis, subcutaneous tissue, muscle or bone |
Head | En coup de sabre, progressive facial hemiatrophy, linear lesions of the face (may involve underlying bone) | |
Generalized | ||
| ≥4 plaques in at least 2 of 7 anatomic sites (head-neck, right/left upper extremity, right/left lower extremity, anterior/posterior trunk); isomorphic pattern: coalescent plaques inframammary fold, waistline, lower abdomen, proximal thighs; symmetric pattern: symmetric plaques circumferential around breasts, umbilicus, arms, and legs | |
| Circumferential involvement of majority of body surface area (sparing fingertips and toes), affecting skin, subcutaneous tissue, muscle or bone; no internal organ involvement | |
Mixed | Combination of any above subtype (eg, linear-circumscribed) |
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