Hi Bill, DrTBarghouthi and Melvin. Thank you for the replies. Dr T.B thank you for that informative post and yes you are correct I have Inflammatory bowel disease (Ulcerative colitis/crohns disease). I have been on Imuran for almost 5 years now on a lower dose of 50mg together with allopurinol 100mg. Also on Stelara injection (ustekinumab) and mesalazine. Been on other biologics before like infliximab and Humira. I did have an initial thinning of my hair when I first started Imuran but it n