Welcome to healthcare Magic!
Two diverse unrelated possibilities are there.
Some brain pathology like tumor
, pituitary infarct et cetera or It may be due to Addison's Crisis
Please get evaluated by an senior physician and you would get leads from CBC, RFT, LFT, CT Brain & MORNING SERUM LEVELS OF CORTICOSTEROIDS
Please get these investigations and if you want inform me in a Fresh Query / Follow up Query
Wish you a great health!