Your reports are suggestive of pre-
diabetes or diabetes. Need PPBS and
HBA1c for conformation of the same. The brackish pigmentations are called acantosis and it is the sign of insulin resistance which can lead to diabetes sooner or later. Usually it is found in obese individuals. So u need to change ur lifestyle by changing ur diet and regular exercise. Reducing ur weight if obese will b very helpful.
Next Steps
FBS PPBS
HBA1c consult endocrinologist