hi i had gone through your query and understand your concerns. i would come up with two most possibilities to fit your wife condition .these include
1.first possibility is,THYROID COMPLICATIONS;
blood test for thyroid profile may confirm the diagnosis whether it is
hypothyroidism or hyper thyroidism
2.second possibility is,SEBORRHOEIC DERMATITIS;it is a constitutional disease with disturbed sebaceous secretion.
management include;
-open air life
-exposure of the integument to fresh air
-mild exercise
-well balanced diet-cutting down of carbohydrates,fats,and beverages
-mental relaxation are beneficial
treatment option;
i advise you taking
Homeopathic medicines gives safe and permanent cure for her complaints
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit her complaints
I hope this is helpful for you, thank you