Stemmer's sign is
Swelling in the foot seen with lymphoedema
Loss of normal perimalleolar shape in lymphoedema
Subcutaneous fibrosis which makes skin over dorsum of foot not pinchable
Pitting Oedema in filariasis
Skin over the dorsum of foot cannot be pinched because of subcutaneous fibrosis in filariasis = STEMMER'S SIGN.