1.  Acne can affect the face, chest and back and, in severe cases, cause painful cysts.

2.  Hospitalization is necessary in severe cases.

3.  In the past, women with these symptoms rarely sought treatment, and women with severe cases were hospitalized.

4.  In the severe case he or she is extremely uncomfortable, experiencing vertigo on any head motion accompanied by nausea and vomiting.

5.  It can also be relieved or controlled by drugs and in severe cases, surgery.

6.  More severe cases require identification of the bacterial types involved and selection of a specific antibacterial product.

7.  Neglect of these rights has, in severe cases, contributed to extremism, regional instability and conflict.

8.  Obviously excluding more severe cases results in bias because the remainder are less severe.

9.  Such blockages cause pains known as angina, and in severe cases can lead to a heart attack.