I am 59 yrs. of age with 105 kgs. weight.70 inches height. Two yrs. back A small 1mm reddish pimple\circle developed on front side of my right leg which enlarged to about 2 inches hard circular shape patch within 8-10 days and then reduced and vanished in next 10-15 days.Slight etching but no medicine was applied. In nearby area another similar point developed and vanished which took same duration. This continued on left leg then on right leg both vanished and left black skin of about 3-4 inches rectangular shape.. I consulted general physician, skin specialist but no concrete\successful medicine or solution till date. Now since 1 year, similar spots are developing on my upper hands, back, stomach . They grow similar way 10-15 days and reduction takes place in another 10-15 days without any medicine or etching. They are painful only if I press them. Lastly, Neurologiest who after checking blood circulation in my both legs (Found okay) suggested course of 12 Peneciline injections of 5 ml. every 21 days. I have complited 7 injections so far. However, such red hard spots still erupts and goes off on my body. Have 3 such spots on my left upper hand and 1 each on both sides of navel and 1 on the back. Pl. tell me why it is coming and medicine\solution for the same.