hello friend,
Welcome to healthcare magic.
I have read your query and understood your concern.
Rash on shoulders, back, around armpit can be due to number of reasons.
I need to know the color of the lesions?
Are they itchy or asymptomatic?
Are the lesions permanent or temporary?
What is the size of lesions?
Burning sensation urine may be associated or may not be associated with the rash.
I will advice you to get your urine test done including routine and microscopy of urine. Preferably take early morning midstream sample.
In the mean time, take plenty of water.
Kindly reply to my questions and attach the report of the test so that i can advice you further.
Thanx.