got this mnemonic online and found it very helpful.
I added some more information to it, my theory being, if I forget one manifestation; I have another one for backup.
A PIE SAC
Arthritis, Ankylosing spondylitis
Pyoderma gangrenosum, Pyoderma vegetans, Perianal skin tags, Psoriasis, Pleuritis, Pericarditis, Pancreatitis
I for eye signs: Iritis, uveitis, episcleritis, conjunctivitis
Sclerosing cholangitis, Sacroilitis
Clubbing of fingers, Cholelithiasis, renal Calculi
Other manifestations include thromboembolism, vitamin and calcium deficiency due to involvement of the ileum and myocarditis.
How I remember pANCA is associated with ulcerative colitis: nUCLEAR is an anagram for ULCER so ulcerative colitis is associated with pANCA.
Is it too much? xD