Symptoms are (all of them as you never know what s relevant, but these are all things I ve noticed): Twitching (like spasms) in outer corner of eye. Aching/dull pain in collar bones. Dizzy. SLight hair loss in eyebrows. Quite a lot of hair loss on head when washing hair or just moving hair with my hand or brushing. Tired despite sleeping more. Constipation despite going more regularly than I normally do (ive never been what you would call regular but last week or two I seem to have become regular but still had quite bad constipation the other evening.