Pimples under the skin are usually refereed to as cysts which is the most severe type of acne. You can tell it is cystic acne which is sometimes called nodulocystic acne because they go deep into the skin. Cystic acne is on of the rarer types of acne, although not uncommon it is the form of acne which develops later into scaring which can also cause a another problem.

The scars usually look like red patches covering the skin and are hard to get rid of when on the body but respond better to treatment when located on the face. These scars are called "pseudo scars" because they are not a true scar, they only last up to about six months. So even if the cyst has gone you will still be left with a reminder each day, Because the scars resemble the cyst in color and shape. But if you don't not access the right treatment for your acne the scaring could be permanent.

Isotretinoin is a common treatment used to cure pimples under the skin, but isotretinion is more commonly known as Accutane. This treatment was first used in the 1930's creating a noticeable difference in sebum production. How it works is by killing diving cells which are the cause of cystic acne, it is also used to treat some cancers such as brain cancer and pancreatic cancer.

Isotretinoin is usually used when no other acne treatments produces results such as use of benzoyl peroxide. Restrictions are quite high when trying to get hold of this drug and can only be prescribed by a dermatologist because cystic acne can sometimes cause permanent scaring in a short amount of time.

Adverse effects to taking isotretinoin are dry skin, eye irritation, mild acne flare ups, back pain or more uncommon inflammatory bowel disease, depression and psychosis. If taken during pregnancy it will most likely cause birth defects, so it is not recommended if you are pregnant or trying to get pregnant.