<s>[INST] What are joint injections for? Are they dangerous? [/INST] In some cases, glucocorticoid joint injections are very useful for treating flare-ups in a single joint and avoid changes having to be made to the background treatment. If these are given using general aseptic measures and by trained personnel, they are usually uncomplicated.    Source: Clinic Barcelona. Link: https://www.clinicbarcelona.org/en/assistance/diseases/rheumatoid-arthritis/frequently-asked-questions. Field: Rheumatology. Disease: Arthritis </s>