thank you for replying.
there can be a couple of explanations for this .
decreased vascular supply
or disturbed nerve supply to lower limb and feet.
both of them can be due to diabetes( and considering his cravings for sweet , i would recommend testing for diabetes as soon as possible),
it can cause both disturbed vascular and or nerve supply.
increased cholesterol can cause thickening of vessels and can cause like this.
some vitamin deficiencies esp B12 can present like this.
he needs one or more of following after a detailed history and physical exam by his primary caregiver.
1. ankle brachial pressure index ( a simple clinical test to check the vascular supply of feet )
2. diabetes, lipid profile and blood pressure testing
3. plus minus nerve conduction studies.
Please feel free to ask any questions you have.
kindly click on positive ratings if this answers your query.
kindly let me know if i should provide any clarifications. thank you