Linear atrophoderma of Moulin
LAM tends to exhibit a stable, nonprogressive course and typically appears suddenly without preceding inflammation or symptoms.
L90.8 – Other atrophic disorders of skin
403395007 – Linear atrophoderma of Moulin
Differential Diagnosis & Pitfalls
- APP – Well-circumscribed, depressed patches or plaques with characteristic "cliff-drop" edges that do not follow lines of Blaschko.
- Linear morphea – Often associated with preceding lesion inflammation, induration, and dermal sclerosis on histopathology.
- Linear and whorled hypermelanosis
- Incontinentia pigmenti, stage 3 (hyperpigmented stage)
- Lichen striatus
- Linear epidermal nevus
- Inflammatory linear verrucous epidermal nevus (ILVEN)
- Focal dermal hypoplasia (Goltz syndrome) – Characterized by absent dermal collagen with accompanying dermal adipose tissue on histopathology in newborns or young children.
- Linear porokeratosis – Can present anywhere on the body. While they tend to follow lines of Blaschko, lesions tend to have raised hyperkeratotic, peripheral ridges with accompanying anhidrosis and/or pruritus.
- Pigmented post-herpes zoster scars