Hi. Please get himself evaluated for his blood glucose
may manifest itself in a very similar fashion and needs to be a top differential diagnosis. Please check his fasting blood glucose, post prandial blood glucose and HbA1c
, which should give a diagnosis. The other thing maybe that he has a nasal carriage of a bacteria named staphylococcus aureus
, which may be needed to be eradicated. Hope I answered your query. Thank you.