I need help!!

Hi everyone... Im 24 years old male .I have a very strange problem and it's been years i can' understand what's my problem. Ok after 15 i lost a lot of weight i dont know why. I was not fat so after weight loss my face got haggard skin became thin holes undereyes and etc. then other symptoms came. I started to feel always tense nervous, anxious, my hands , feet always sweaty. Now im 24 and nothing has changed, again always tensed palm always sweaty and the most important problem is my face. I have good facial structure but look always tired worn out. Now i have gained mu weight back but mu face is the same, im 183 cm and 85 kg but i look skinny and unhealthy. Also i feel always tired. Please if somebody knows smth about this symptoms help!!