Although less common, it is certainly possible to get erysipelas affecting the other leg as well. Some predisposing factors for recurrent infection include:
1. Fungal infection of the feet
2. Breaks or cracks in the skin
3. Underlying diabetes or conditions that lead to a lowered immunity.
To prevent recurrent infections, you should therefore treat any underlying fungal infection of the feet if present.
Also avoid scratching the area as the breaks in the skin can predispose to the infection. The skin should be kept clean and well moisturized. If there is underlying diabetes, tight control should be maintained. Sometimes, taking a prophylactic course of antibiotics like penicillin may be helpful.
You should raise your concerns of recurrent infection with your doctor and discuss the various options to prevent this with him.
