About Morphea
Morphea is a localized form of scleroderma confined to the skin and subcutaneous tissues, without the systemic manifestations characteristic of systemic sclerosis (systemic sclerosis primarily affects internal organs). The pathophysiology involves excessive collagen deposition in the dermis and subcutaneous tissues, mediated by transforming growth factor-beta (TGF-β) and other fibrogenic cytokines, with activation of fibroblasts and myofibroblasts.
Morphea presents as circumscribed patches of induration with characteristic lilac ring (reddish-purple border) in early stages. Lesions typically begin as erythematous or violet patches that gradually harden and become sclerotic. Hypopigmentation or hyperpigmentation develops at lesion sites. Common locations include lower abdomen, flanks, upper back, and lower extremities.
Morphea can be superficial (affecting dermis only) or involve subcutaneous tissue and muscle. Linear morphea (scleroderma en coup de sabre) can cause significant deformity, particularly when involving the face or affecting function over joints. En coup de sabre with facial involvement can cause hemifacial atrophy. Systemic symptoms and internal organ involvement (which define systemic sclerosis) do not occur with morphea.
Common Symptoms of Morphea
Recognizing the signs of Morphea early can lead to faster diagnosis and better outcomes. Symptoms may vary in severity from person to person. If you or a loved one are experiencing any of the following, consider speaking with a specialist.
- Hardened, thickened patches of skin with well-defined borders
- Purple or reddish rings around patches (lilac ring sign)
- Hypopigmentation or hyperpigmentation of affected areas
- Skin tightness and loss of normal skin texture
- Itching or burning sensations
- Contractures and functional impairment if involving joints
Who Morphea Affects
Morphea can develop at any age but most commonly appears in adults aged 30-60 years, with higher prevalence in women (female-to-male ratio approximately 2-3:1). It occurs across all racial and ethnic groups, though some studies suggest higher prevalence in Caucasians. The disease is not inherited, though autoimmune tendency may run in families.
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Trusted Morphea Resources
Reputable organizations and medical references for learning more about Morphea, including disease registries, foundation resources, and clinical guidelines.