An ulcer is a loss of cutaneous substance of slow development and many times recurring.

These types of ulcers usually develop especially in the lower third of the leg, both in the external as well as internal facets frequently near the malleolus, even at the height of this, in which case the scarring will be even more difficult.

The size of the ulcers varies, they can become very large. Their aspect and coloring enable us to determine their age and to make a prognosis.

If they are gray, healthy and with deep borders, they have a poor prognosis of scarring, if the bottom is purulent, of greenish yellow color, the ulcer can become infected with very diverse germs. If on the contrary, they have a clean bottom, with red granulation, fine borders, elastic and with epidermal border, their prognosis will be more favorable.