👉 Del fluid, often referred to as Deltoid fluid or Deltoid effusion, is a type of fluid accumulation in the shoulder region, typically found in the subacromial space, which is between the deltoid muscle and the acromion. This fluid results from inflammation or injury to the surrounding tissues, such as the rotator cuff muscles, tendons, or bursa, and can be caused by conditions like rotator cuff tendinitis, bursitis, or shoulder impingement syndrome. The fluid itself is usually clear but may appear cloudy or bloody, indicating more severe inflammation or injury. Diagnosing del fluid often involves imaging tests like ultrasound or MRI to identify the cause and guide treatment, which may include rest, physical therapy, anti-inflammatory medications, or in some cases, surgical intervention.