Hi.
Thanks for your query.
Noted the history about your Aunt and understood the concerns.
Indigestion,
cold, headache, can not focus, can not breath well sometimes and gets blue sometimes indicate the following:
Cardiac with or without respiratory system problem; less oxygenation causes blueness, headache and feeling cold.
Hence I would advise her the following in such a situation:
Get a thorough Cardiac and respiratory evaluation, proper examination and investigations like EKG, Cardiograph and other cardiac tests.
CT scan of the chest along with PFT that is pulmonary function tests.
Any other tests of blood, urine and stool as a routine and added-on as per the clinical findings to get an appropriate diagnosis and management.
Ask her to sleep in a reclining position.
Oxygen by mask.
Strict
bed rest so that the heart is exerted least possible till a proper diagnosis is done and a correct line of treatment is done.