Is Accutane (isotretinoin) worth the risk if you have other health problems besides acne?

My dermatologist wants to put me on Accutane, but after reading about all of the side effects and compulsory contraceptive pill I freaked out. I already have an illness, (symptoms include debilitating fatigue, headaches, depression, mood swings, lowered immune system and inability to tolerate a lot of foods). Obviously my acne is a blight on my life, but it seems that I can't take anything for it without compromising the rest of my health. At least nothing that actually works! Has anyone else with a long-term illness taken Accutane and managed it ok?
Is Accutane (isotretinoin) worth the risk if you have other health problems besides acne?
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