Biceps tendinopathy typically presents as a gradual onset of pain at the top of the upper arm. Initially, this pain may only occur after exercise and may be accompanied by stiffness or tightness in the shoulder. Early symptoms are often overlooked, as they tend to ease quickly with arm movement or the application of heat, such as from a hot shower. However, if left untreated, the condition can worsen. Pain may become more frequent and intense, eventually appearing during physical activity. In the early stages, this pain might subside after warming up, only to return after exercise. As the tendinopathy progresses, the discomfort can persist throughout exercise and, in more advanced cases, may be constant—even at rest.