My 21 year old son is complaining of back pain near or at his kidneys, esp the left side. Hands and feet are swollen enough that gloves and shoes no longer fit correctly. He has waves of dizziness, constipation, cold flashes, gets very weak at times without exertion, and is constantly fatigued. He has been to multiple urgent care/er and they tell him ulcer and gas and send him on his way. This has been ongoing for months.
Hi, This can be due to the presence of any problem in the kidney which is associated with fluid retention in the body as you complain of swollen hands and feet. Kidney function seems to be compromised. Without wait and watch, he needs immediate clinical examination and tests of blood and urine with radiography to find the healthy status of kidneys. I suggest you please take him to the emergency room as soon as possible so that it can be ad Chat Doctor.  Hope I have answered your query. Let me know if I can assist you further.