The two types of high blood pressure.

Primary (essential) hypertension

For most adults, there's no identifiable cause of high blood pressure. This type of high blood pressure, called essential hypertension or primary hypertension, tends to develop gradually over many years.
Secondary hypertension

Some people have high blood pressure caused by an underlying condition. This type of high blood pressure, called secondary hypertension, tends to appear suddenly and cause higher blood pressure than does primary hypertension. Various conditions and medications can lead to secondary hypertension, including:

    Kidney problems
    Adrenal gland tumors
    Thyroid problems
    Certain defects in blood vessels you're born with (congenital)
    Certain medications, such as birth control pills, cold remedies, decongestants, over-the-counter pain relievers and some prescription drugs
    Illegal drugs, such as cocaine and amphetamines
    Alcohol abuse or chronic alcohol use
    Obstructive sleep apnea


Source : www.mayoclinic.org/diseases-conditions/high-blood-pressure/basics/causes/con-20019580

Known causes

About 10% of high blood pressure cases are the result of an underlying condition or cause. These cases are referred to as secondary hypertension. 

Common causes of secondary hypertension include:

    kidney disease
    diabetes
    narrowing of the arteries (large blood vessels) supplying the kidneys
    hormonal conditions, such as Cushing's syndrome
    conditions that affect the body’s tissue, such as lupus
    oral contraceptive pill
    painkillers known as nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen
    recreational drugs, such as cocaine, amphetamines and crystal methamphetamine
    herbal remedies, such as herbal supplements

Source : www.nhs.uk/Conditions/Blood-pressure-%28high%29/Pages/Causes.aspx