Lethargy with lower body temperature, cognition?

I recently barely finished a very low dose, 6 month course of Isotretinoin- that I got online w/o a script. The fatigue gradually increased throughout the course to the point that stimulants became completely ineffective and I could barely get out of bed. I figured the drowsiness would subside upon discontinuation of the medication. Well it's been a week now and I'm disoriented, freezing cold, completely lethargic, my ears snap, crack, and ring here and there. I feel horrible!! I feel like I've been without sleep for a month, even though I have been sleeping fine. My temperature has always ran low, but I'm not really sure when to be concerned. Any ideas as to what might be going on or what kind of medication I should take? I started taking an iron supplement, even though I'm predisposed to hemochromatosis and I don't feel any better. I'd really appreciate a reply! Thanks!!        

[S. Kaul, MD]

Hi there!

Well, without a detailed clinical evaluation it would be difficult to determine the cause of your symptoms. Possibilities that may need to be considered include low blood sugar, stress/ anxiety, systemic infections/ inflammations, micronutrient deficiencies, hormonal/ endocrine abnormalities, medication side effect etc. I would suggest getting this evaluated by a primary care physician initially and depending on the cause diagnosed/ suspected, it can be managed accordingly or specialist care may be sought.
Hope this helps.

Take care!