Toes are swollen and purply, red colour. Rest of feet normal colour but swollen. Spots inbetween/under toes. Sometimes gets hot and itchy. Help?

Athlete's foot. From the sounds of your symptoms, especially the itching may indicate a fungal infection which refers to "Athlete's foot" When there is an inflammation of the skin it can discolor and usually becomes itchy. This can and does cause the toes to swell as well of the rest of the foot to swell. There are topicals that work rather well for this. The generic name is Terbinafine.