Hello, I always feel nausea, tireness, blurry eyes...

Dear Customer
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Steps before going to doctor :
1. make sure you are not taking any medication that cause those symptoms as a side effect
2. stay hydrated , have plenty of healthy clear fluids 
3. have a healthy regular diet
4. avoid smoking , alcohol
5. sleep well 
6. avoid stress and anxiety 
What is the suitable speciality for your medical condition ?
internal medicine doctor would be the suitable doctor for your case 
What is the expected steps into treating your medical condition ?
1. doctor will first make sure you have done the first step ( we have mentioned it earlier )
2. doctor will run some tests including :
- general examination
- blood test
- vitals such as blood pressure and blood sugar levels 
- kindey functions test
- hormones level test ( according to your medical condition )
- liver function test ( according to your medical condition )
- imaging test ( according to your medical condition )
3. after running the test and find out the cause , doctor will start your treatment according to the cause and your medical condition 
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Kind Regards