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 |
- Coalescent plaque
| | ≥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 |
- Pansclerotic
| | 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) |