👉 Perilymphangiitis, also known as perilymphangiomyelia or perilymphangiitis, is a condition characterized by inflammation of the perilymphatic (periurethral) vessels in the lungs. This can occur due to various factors such as injury, infection, autoimmune disorders, and certain medications. The symptoms of perilymphangiitis are typically mild, with pain or discomfort in the chest, neck, back, abdomen, or jaw area. It may also