My son is 6 years old. he has a history of exchema and asthma. He has recently been diagnosed with staph infection on sores on his legs. He has swollen lymph nodes and crusty sores on his scalp. These sores look like they have puss and or drainage. He is currentyly being treated with augmentin. it is helping. Now my three year old daugher has the same type sores on her scalp. What is this? we are still waiting on the culture results from the doctor.