New here. I have my personal presence my brother is injecting yellow opiates. Had no problems until recently , soon as he was done pushing in the crease of his elbow his arm starting burning and felt like being poked all over from his elbow down, arm turned really red, and white welps popped up all over his arm. I think the burning didnt last too long maybe a min not exactly sure, arm stayed red for a while and the welp around injection site stayed the longest but was gone the next day. He did use q-tip to filter out of spoon after crushing on counter he always does. After that he started not using a filter and just crushing on a card folding and dumping into 30ga, 100 unit pen then pulling up 50-60cc of hot water and thumping till dissolved and that seemed to be working until today on the same arm, same site (has used this site in between instances) it started itching as he pushed in and white welp formed around site but no burning, redness, or other welps. What caused this. I would prefer he would stop but if he's going to continue I want him to do it the safest way possible. Thank you for reading this any help suggestions much appreciated and is there a better, safer, cleaner way for him to get it broken down and filtered or not filtered. Also is there any danger to not filtering it
