| Summary: | Epididymitis or epididymo-orchitis is a common urological condition in males characterized by scrotal pain, swelling, and potential urinary symptoms. Although antibiotics can eliminate the causative pathogens, persistent inflammation may compromise spermatogenesis and steroidogenesis. The testis, an immune-privileged organ, possesses a specialized immune microenvironment that shields germ cells (GCs) from autoimmune attacks and orchestrates immune defenses against pathogens. This review focuses on the complex interplay between immune cells, including macrophages, dendritic cells (DCs), mast cells (MCs), and T cell subsets, in the testis. The roles of these immune cells in infection-induced orchitis were deliberated upon, emphasizing their involvement in inflammation and immune tolerance. Furthermore, the implications of testicular fibrosis and its effect on male infertility are discussed, emphasizing the role of MCs in tissue remodeling. The objective of this review is to expand comprehension of male reproductive health and foster the identification of potential therapeutic targets for epididymo-orchitis.
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