Thanks for the query
Like your doctor said it very unusual to develop muscle pain
and headache with colistin. I think it is unlikely that the present symptoms of headache and myalgia
are secondary to antibiotics, my advice would be to continue the antibiotics and keep a close watch on her symptoms.
It is not good to prematurely stop the antibiotics as there are chances of resistance. The other alternative is to start tigicycline instead of colistin
I hope I was of help.Please discuss my suggestion with your doctor
I wish her a speedy recovery