Primary Cutaneous Amyloidosis

**Semantic type:** Neoplastic Process

**Definition:** Amyloidosis that arises and remains localized in the skin. There are three main forms of primary cutaneous amyloidosis: lichen amyloidosis presenting with multiple itchy, raised, scaly red/brown spots; macular amyloidosis presenting with itchy, flat, brown or grey spots that form patches of darkened skin; and nodular amyloidosis presenting with brown or red nodules.

**Synonyms:** - Primary Localized Cutaneous Amyloidosis