Hi Fever with chills along with limb swelling suggests cellulitis. In diabetes owing to peripheral neuropathy, the ability perceive sensations like touch pain, temperature etc. are decreased. This leads to recurrent trauma which are often unnoticed owing to the absence of pain. Limb care is very essential part in diabetic management as it may turn to be troublesome to control infection as diabetes advances and may sometimes leads to amputation of leg even So protection of limb from repeated minor trauma is essential. Thank you