Sugar Mayhem

Patient: Hello,For some time now I have woke up from a nap or a deep sleep to find myself wanting craving sugar. Not chocolate candies or cakes, but regular white sugar. I will eat a teaspoon full and then a few minutes later my body stops shaking. Is this normal? I am a 32 yr old female where everything else is normal, except this sugar thing has been going on since 1999.