If a patient has pain inside the elbow, it may be due to the following reasons: First, it may be due to an injury to the elbow joint, such as a fracture, dislocation, ligament damage, cartilage damage or other damage in the elbow joint, which may cause deep pain here. Secondly, it is common for patients to have joint inflammation of the elbow joint, such as traumatic arthritis, osteoarthritis, gouty arthritis or rheumatic or rheumatoid arthritis, which can cause the above symptoms. Third, it is common for patients to suffer from overexertion of the elbow or inflammation of the tendon stops, such as excessive exercise of the upper limbs or excessive use of the hands, which may cause the above-mentioned lesions and subsequently lead to pain.