Under exceptional circumstances, the court may extend the term of durational alimony by a showing of clear and convincing evidence that it is necessary after application of the factors in subsection (3) and upon consideration of all of the following additional factors: 1. The extent to which the obligee’s age and employability limit the obligee’s ability for self-support, either in whole or in part. 2. The extent to which the obligee’s available financial resources limit the obligee’s ability for self-support, either in whole or in part. 3. The extent to which the obligee is mentally or physically disabled or has been diagnosed with a mental or physical condition that has rendered, or will render, him or her incapable of self-support, either in whole or in part. 4. The extent to which the obligee is the caregiver to a mentally or physically disabled child, whether or not the child has attained the age of majority, who is common to the parties. Any extension terminates upon the child no longer requiring caregiving by the obligee, or upon death of the child, unless one of the other factors in this paragraph apply. *Hover to see criteria for possible extensions