Cutaneous Immune Microenvironment Profiling as a Platform for Precision Dermatology: Lessons From Inflammatory and Malignant Skin Diseases

Precision medicine has transformed medical oncology and several systemic immune-mediated diseases; however, dermatology remains largely dependent on morphologic classification and empiric therapeutic selection. Thus, dermatologic disease management is increasingly challenging with the endless addition of immune modulatory treatments. The skin offers a uniquely accessible immune organ in which longitudinal sampling of the disease microenvironment is feasible through minimally invasive approaches. Recent advances in single-cell transcriptomics, spatial biology, circulating tumor and immune profiling, and non-invasive skin sampling technologies have accelerated efforts toward biomarker-driven precision dermatology. Inflammatory and malignant skin diseases share convergent immune pathways involving T-cell activation, cytokine dysregulation, tissue-resident immune populations, and stromal remodeling, suggesting that integrated immune microenvironment profiling may provide a unified framework for disease stratification and therapeutic selection. Psoriasis has emerged as a prototype disease demonstrating molecularly distinct immune endotypes associated with differential responses to biologic therapy. More recently, lichen planus and cutaneous T-cell lymphoma illustrate the expanding translational relevance of interferon signaling, Janus kinase–signal transducer and activator of transcription activation, and spatial immune architecture. Understanding the variability in these immune, stromal, and malignant cellular ecosystems likely facilitates improved therapeutic development and prediction of treatment response. Novel technologies including hydrocolloid micro-patch sampling, tape stripping, spatial transcriptomics, and circulating cell-free DNA analysis may enable serial, non-invasive monitoring of cutaneous disease activity and therapeutic response. This review discusses current and emerging platforms for immune microenvironment profiling in dermatology, highlights translational applications across inflammatory and malignant skin diseases, and proposes an integrated precision dermatology framework capable of transforming clinical decision-making and longitudinal disease monitoring.