Dehydration. Colour is very very yellow.

Hello doctor, I have been suffering from seviour dehydration for last 6 years.my blood sodium level is normal but that sodium is not being absorbed in my cells.thats why my whole body is so dry.due to chronic dehydration now I am getting little convulsions sometime, not so seriously but I get.for that reason I have been suffering from frequent urination for last 1 year.If I drink electral powder water goes out from the body in half an hour through urination.I am taking some homeopathic medicine.but it is not working properly.when it works and I go to urinate after 4, 5 hours urine colour is very very yellow.but If when medicine stops working urine happens as usual in every 2 hour.and urine color aslo becomes normal ,watery,my skin is so dry due to less water,scalp is full of danruff,in ear full of dandruff, eyelids are full of dandruff whole body is dry,I am 26 but looks like 33 years age.hairs are falling due to dandruff.I went to a urologist,he gave me tryptomer.but it not work.thank