Hi Rajasekharan.
Thanks for your query and an elucidate history.
Since you are a diagnosed case of
Ulcerative colitis taking Melamine tablets , the cause of pain in the left side of you abdomen is obviously due to colitis . Urine tests may be normal in this condition.
The skin disorder is due to
fungal infection hence there is a hair loss. Please
consult a Dermatologist for further diagnosis and treatment.
Yes, there can be an auto-immune disorder and you need steroid by enema or orally to get a control of the colitis ans pain.
There are no specific pathological tests to determine this and ESR has no diagnostic value at all. 25 is not very high.So do not bother about is unnecessarily.
Consult a Gastroenterologist to get an appropriate treatment and remember this is a problem which can be recurrent.
Stress and
anxiety play a very large art in causing such problems , hence you have to keep them under control at any cost.
Melamine alone may be not sufficient and you may need an additional treatment