What are the side effects of a cortisone injection?
Generally speaking, "closed injection" refers to block therapy. Block therapy may have side effects such as local pain and discomfort, subcutaneous bleeding and bruising, local tissue damage and atrophy, local infection, and allergic reactions. A detailed explanation is as follows:

1. Local Pain and Discomfort
During block therapy, the medication may irritate the local tissues, causing temporary pain or discomfort at the injection site. This pain usually subsides on its own within a few hours and requires no special treatment.
2. Subcutaneous Bleeding and Bruising
During the injection process of block therapy, small blood vessels may be damaged, leading to subcutaneous bleeding and bruising at the injection site. Minor bleeding often stops spontaneously. If the bleeding is heavy or does not stop, prompt medical attention is necessary to prevent hematoma formation.
3. Local Tissue Damage and Atrophy
Long-term or repeated block therapy at the same site may damage local tissues due to the medication, making tendons and ligaments fragile and increasing the risk of rupture. It may also cause local soft tissue atrophy, affecting normal function.
4. Local Infection
As block therapy involves injecting medication into the body, there is a risk of infection. Improper technique or post-injection care may lead to infection at the injection site, manifesting as redness, swelling, warmth, and pain.
5. Allergic Reaction
Block therapy often involves corticosteroids and local anesthetics. Patients with allergic constitutions may experience allergic reactions during block therapy, presenting symptoms such as rash, itching, or urticaria. In such cases, the medication should be stopped immediately, and antiallergic treatment should be administered.
It is recommended that patients undergo block therapy at qualified medical institutions and strictly follow the doctor's instructions to ensure treatment effectiveness and safety. After block therapy, keep the injection site clean and dry, avoid getting it wet or contaminated, to promote recovery.