Why sometimes I felt dizzy and beadache

What is the possible cause of your medical condition ?
1. medication side effects 
2. low blood pressure 
3. low blood sugar 
4. anemia 
5. ear infection and diseases
General advices to relieve dizziness ? 
1. make sure you eat well , healthy food should be a main part of your diet and drink plenty of water
2. if you are suffering from HTN or DM , control them and avoid hypotension and hypoglycemia which is usually cause by wrong doses or medication use for those disease 
3. make sure you are not taking any medication that cause dizziness as a side effect ( which is common )
4. exercise regularly 
5. avoid stress and have plenty of rest
6. take anti-dizziness medication such as : meclizine 
7. if you medical condition presisted or new symptoms appeared , consult an internal medicine doctor as soon as possible 
What is the needed tests :
1. physical examination by doctor 
2. vital signs 
3. blood test