<s>[INST] I am 25 years old. Last week I was hospitalized after being in severe pain and diagnosed with kidney stones . 5 of them. I have had kidney infections about every 2 months for years, always thinking it was because of drinking soda . After this episode I noticed very dark purple bruises on my thighs. Only on my legs no where else. I am realizing that I ve had these same bruises a lot. And usually around the time i am having kidney trouble. They go across my thigh and some are round. Very large, dark purple, but do not hurt. And opinions on what this could be caused by and what I should do? I have pictures if needed. [/INST] Hi, many thanks for the query! You need to do- USG PUB, X-ray PUB, CBC, FT, Urine (Culture & Sensitivity). You haven't mentioned size & location of the stones. Till then take antispasmodics, diuretics, painkillers, with your doctors opinion. Take antibiotics as per the report of Culture & Sensitivity. Chat Doctor. See your Dermatologist for dark purple bruises on your thighs as these doesn't seem to be related to kidney stones/infection. Wish you a good health. Take care. Regards. </s>