Hello
Dizziness may be due to many reasons like hypertension,
cervical spondylosis,internal ear problem etc.
You may need clinical correlation and investigations.
It is most likely due to elevated blood pressure in your case.
It is generally a manageable condition.You may need few investigations like routine hemogram,
cervical spine X-ray(AP/Lateral),random blood sugar,
lipid profile,liver and renal function test, etc.
You may need few medicines after investigations.
Small bump behind right ear may be due to
enlarged lymph node.It need clinical examination and investigations.
It is a common site of lymph node enlargement.It may be due to neck,scalp or
throat infection.
Generally it resolves with treatment of underlying cause.Generally it is not a serious problem.
Ultrasound can be done if needed.
Get well soon.
Take Care
Dr.Indu Bhushan