Unveiling the Hidden Sense of Touch in Humans' Hair Follicles

Scientists have discovered a new sense of touch in humans that is mediated by hair follicles. Through analyzing single cell RNA sequencing data, researchers found that hair follicles contain a higher than expected percentage of touch-sensitive receptors. Further experiments revealed that hair follicle cells release neurotransmitters serotonin and histamine, which activate adjacent sensory nerve cells, thus passing on a sense of touch. This discovery opens up new avenues for understanding the role of hair follicles in processing light touch and potential applications in skin conditions such as eczema.