Hi,
Noted the history about a 59 year old, diabetic, started with darkening of toe nails as mentioned, no pain or
numbness.
Diabetes causes changes all over the body including the blood vessels.
The most probable cause of darkening of the toenails can be gradual occlusion of peripheral blood circulation, meaning the diameter of the small blood vessels get narrowed due to secondary effect of diabetes.
Hence I would advise you hte following:
Consult a Vascular Surgeon for proper clinical evaluation, examination and investigations like color doppler of all
limbs, tests of blood pertaining to the disease to know the exact cause.
This will allow to get started on appropriate management.
Good control of diabetes is very important.
No
smoking.
Start exercises.
Reduce weight.
All this will help in a long run.
Take care.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, General Surgeon