Big hugs
Unfortunately you can get more than one air immune disorder especially with crohns
DS has JSpA ( kiddie version of joint inflammation in his hands knees hips heels and ankles )
Skin - [wiki2="Sweets-Syndrome"]sweets syndrome[/wiki2] plus allergic dermatitis and dyshirotic ezcema
Would love to blame remicade - he was on that as well for eight months hit a lot of dermitis reactions which went away when he stopped it but other skin and joint issues showed up later with [wiki2="Humira"]humira[/wiki2] so.,, wasn't remicade
Also has skin issues since birth so can't even blame crohns
Good luck
Mtx is often added for joints and Ali helps with skin stuff as well when added to biologics
Tagging crohnsinct