Novel Technologies for Exploring the Skin–Brain Axis

The review examines the skin–brain axis, focusing on its role in disorders like alopecia and atopic dermatitis, and highlights recent technological advancements in sensing and bioelectronic interfaces. These innovations, including microelectrode arrays and organ-on-chip systems, aim to improve the understanding and treatment of skin-brain axis disorders by enabling real-time monitoring of neuronal activity and neuroimmune signaling. The document emphasizes the importance of keratinocytes and other cell types in sensory processing and neuro-immune signaling, and discusses the shift towards human-derived experimental systems for more relevant research models. Challenges such as biofouling and sensor drift are addressed, with strategies suggested for developing next-generation sensor-integrated platforms. These advancements hold potential for enhancing the understanding of neurocutaneous interactions and developing new diagnostics and therapeutics.