Lichen planus pigmentosus
Hao Feng1, Daniel Gutierrez, Lisa Rothman
1The Ronald O. Perelman Department of Dermatology, New York University Langone Medical Center, New York, New York. haofeng625@gmail.com.
Dermatology Online Journal
|January 25, 2019
Abstract:
Lichen planus pigmentosus (LPP) is an uncommon variant of lichen planus of unclear etiology that predominantly affects patients of skin types III to VI. We report a case of LPP of two years duration in a 67-year-old man involving upper extremities, chest, abdomen, and upper back.
More Related Videos
Related Concept Videos
Ecological Succession
21.5K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.5K
Biodiversity and Human Values
17.1K
Human civilization relies on biodiversity in many ways. Sudden changes in species biodiversity result in environmental changes that can modify weather patterns and therefore human civilizations.
17.1K


