MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression by binding to target mRNAs, influencing their stability and translation. This review explores the regulatory mechanisms of miRNAs and their implications in inflammation-related diseases. MiRNAs are involved in various cellular processes, including transcription, splicing, and translation, and their dysregulation is associated with diseases such as cancer, autoimmune disorders, and inflammatory conditions. The biogenesis of miRNAs involves transcription, processing, and integration into the RNA-induced silencing complex (RISC). miRNAs can be produced through canonical and non-canonical pathways, including the mirtron pathway and Dicer-independent mechanisms. miRNAs also function in the nucleus, influencing transcription and epigenetic modifications. Their expression is regulated by transcription factors, DNA methylation, histone modifications, and RNA-binding proteins. miRNA editing, sponging, and degradation further contribute to their regulation. Dysregulation of miRNA expression is observed in various diseases, including skin-related autoimmune and autoinflammatory diseases, arthritis, cardiovascular diseases, inflammatory bowel disease, and neurodegenerative disorders. miRNAs play a crucial role in modulating immune responses and inflammation, and their dysregulation can lead to disease progression. Understanding the mechanisms governing miRNA functions is essential for developing therapeutic interventions and enhancing our understanding of cellular dynamics in health and disease. The review highlights the importance of miRNAs in disease pathogenesis and their potential as diagnostic markers and therapeutic targets.MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression by binding to target mRNAs, influencing their stability and translation. This review explores the regulatory mechanisms of miRNAs and their implications in inflammation-related diseases. MiRNAs are involved in various cellular processes, including transcription, splicing, and translation, and their dysregulation is associated with diseases such as cancer, autoimmune disorders, and inflammatory conditions. The biogenesis of miRNAs involves transcription, processing, and integration into the RNA-induced silencing complex (RISC). miRNAs can be produced through canonical and non-canonical pathways, including the mirtron pathway and Dicer-independent mechanisms. miRNAs also function in the nucleus, influencing transcription and epigenetic modifications. Their expression is regulated by transcription factors, DNA methylation, histone modifications, and RNA-binding proteins. miRNA editing, sponging, and degradation further contribute to their regulation. Dysregulation of miRNA expression is observed in various diseases, including skin-related autoimmune and autoinflammatory diseases, arthritis, cardiovascular diseases, inflammatory bowel disease, and neurodegenerative disorders. miRNAs play a crucial role in modulating immune responses and inflammation, and their dysregulation can lead to disease progression. Understanding the mechanisms governing miRNA functions is essential for developing therapeutic interventions and enhancing our understanding of cellular dynamics in health and disease. The review highlights the importance of miRNAs in disease pathogenesis and their potential as diagnostic markers and therapeutic targets.