Its mostly varicose vein with cellulitis u need to consult immediately at hospital.Delay can lead to complications.
Dr TINU VARGHESE
Hi sir this is no doubt Vericose veins problem.
The best treatment i can suggest you sir is Ayurvedic treatment Sira Vyadha(Vein blood drainage)
Find a good Ayurvedic panchakarma Hospital near you and do this treatment for best results.
Dr Piyush Malav
It may be varicose veins, if vessels are dilated n tortuous, may be superficial thrombophebitis may be something else, you can consult me online, n you have to do colour doppler of that limb if it is not varicose... Keep in touch