Which condition is marked by gradual onset, diffuse tenderness due to repeated microtrauma, and degenerative changes?

The condition marked by gradual onset, diffuse tenderness due to repeated microtrauma, and degenerative changes is tendinitis. Tendinitis typically arises from overuse or repetitive motion, leading to inflammation and irritation of the tendon. The gradual onset of symptoms is a characteristic feature of tendinitis, often presenting as a dull ache that may worsen with activity.

The diffuse tenderness is attributed to the inflammation affecting a broader area around the tendon, which can make it difficult to pinpoint the exact source of pain. Additionally, as tendinitis progresses, it can lead to degenerative changes within the tendon itself, resulting in a reduced ability for the tendon to handle stress, increased pain, and limited range of motion. This is particularly evident in chronic cases where the tendon may not heal correctly due to repetitive trauma.

While fasciitis pertains to inflammation of the fascia, tenosynovitis refers to inflammation of the sheath surrounding a tendon, and ectopic calcification involves abnormal calcium deposits in non-bone tissues, these conditions exhibit different onset patterns, areas of tenderness, and responses to stress compared to tendinitis.