Home :: Ankle & Knee Eczema How to treat Eczema behind the Knees and on folds of Ankles on 6 month year old Baby, using our Psorexederm Cream or Lavender Balm QUESTION - How do I treat my 6 months old baby with eczema behind his knees and on the folds of his ankles Hi David, My son is 6 months old and has eczema behind his knees and on the folds of his ankles.