"Check Your Thyroid Function Before & During Interferon Therapy"--This Article Recommends thyroid function and thyroid antibodies should be evaluated before the start of treatment with IFN-alpha interferon & regularly during therapy.
http://www.natap.org/2001/mar/checkyourthyroid031101.htm I was never told this and mine were never checked.
I know this article is old, but finally more and more doctors are being open about the thyroid damage from interferon. After three years of debilitating pain and other PIS issues I found a doctor who concurred that my "mysterious illness and symptoms" are most likely the damage to my thyroid from interferon. I am being treated and the improvement is dramatic, especially the muscle and bone pain. My vitamin D (which can cause all over body pain) and B12 (which can cause peripheral neuropathy) were low as well. The lack of the thyroid hormone, the Vitamin D and B12 is a perfect storm of PIS.
My thyroid was tested by more than one doctor but the "normal" lab work does not tell the whole story; find a doctor who knows how to dx thyroid disease. Some doctors, even some endocrinologists, cling to the "Immaculate TSH Belief" and won't look at the whole picture. If you are still suffering and you've been told your labs are "normal" read the following and start searching, "The TSH Reference Range Wars: What's "Normal?", Who is Wrong, Who is Right..."
http://thyroid.about.com/od/gettestedanddiagnosed/a/tshtestwars.htm
The symptoms of thyroid disease are the same symptoms we see most often from people on the PIS threads and include: muscle and bone pain, aches in joints, hands and feet; fatigued, exhausted, run down, sluggish, lethargic, depressed, restless, moods change easily, feelings of worthlessness, difficulty concentrating, feelings of sadness, losing interest in normal daily activities, more forgetful, can't seem to remember things (brain fog); insomnia, gaining weight inappropriately, unable to lose weight with diet/exercise, constipation, hypothermia/low body temperature (feel cold when others feel hot, need extra sweaters, etc.), hair is coarse, dry, breaking, brittle, falling out; skin is coarse, dry, scaly, and thick; hoarse or gravely voice, puffiness and swelling around the eyes and face; carpal-tunnel syndrome, irregular menstrual cycles, trouble conceiving a baby, no sex drive, more frequent infections that last longer, snoring more, sleep apnea, shortness of breath and tightness in the chest, need to yawn to get oxygen, eyes feel gritty and dry, eyes feel sensitive to light, eyes get jumpy/tics causing headaches, vision issues, strange feelings in neck or throat, tinnitus (ringing in ears), recurrent sinus infections, vertigo, light headed, severe menstrual cramps...and more.
The thyroid hormone controls every cell in your body; and therefore, everything in your body.