The symptoms I have are: headaches, dizziness, faintness, hungry, cold, sweating, clammy, weak, constantly tired, no energy, shaking, diarrhoea and nausea. I do know I have underactive thyroid and type 2 diabetes diet control with no medication. please help? Is it more to do with my thyroid condition or type 2 diabetes or do I have another medical condition I am not aware of?