Scientists have discovered that our skin can “remember” past injuries, which explains why conditions like psoriasis often flare up in the same spots. In a study with mice, researchers found that skin cells inherit patterns of gene expression and chemical modifications called epigenetic marks. These marks can influence how genes are turned on or off, affecting how skin cells behave. This memory helps skin heal faster after an injury but can also make it overly sensitive, leading to chronic inflammation in conditions like psoriasis. The study used artificial intelligence to identify genetic sequences that drive this memory, and while the research was done on mice, the findings may apply to humans too. This discovery is important because it helps us understand how our bodies respond to injuries and diseases.
QUESTION: How might understanding skin memory change the way we treat skin conditions in the future?
Why your psoriasis flares up in the same spots
