Linear atrophoderma of Moulin

What it is

Linear atrophoderma of Moulin (LAM) is characterized by mildly atrophic and hyperpigmented band-like lesions that follow the lines of Blaschko on the trunk or limbs. Since its initial description in 1992, less than 30 cases have been reported in the literature. Onset occurs during childhood or adolescence and the disease is non-progressive. There is no prior inflammation or subsequent scleroderma. The aetiology is unknown but as LAM follows the lines of Blaschko it has been suggested that the disease is caused by mosaicism of a predisposing gene.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Childhood

Classified as

Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references