Hi

Thanks for the query

Methylamphetamine is a Central Nervous Stimulant that acts on brain chemicals like Norepinephrine, dopamine, etc. Pain in lower back may be because of the stimulant action.

Kidney failure or kidney problems present with flank pain. The other features of kidney failure are pedal edema, decreased urination, etc.

A simple blood test by estimating blood level of urea and creatinine can reasonably indicate whether such issues are there or not. Though in your case it does not seem to be the case. Moreover as it is highly addictive, may be a good idea to remain away from such drugs

Hope this answer would be helpful. I am available for further discussion

Good luck!!!

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Hi and thanks again,

If you are sure that the urine output is clearly decreased than the total water intake (compared to your previous period) and you are not sweating excessively (alternative means of water loss from body), then it may be a wise idea to do a simple blood test of measuring "blood urea and serum creatinine" which will assess the status of your kidney functioning.

Reduced urine output can indicate a renal disease. The aforementioned test will rule out the possibility.

Hope this answers your query. I am available for further discussion

Wish you a good health,

Regards

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