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Of the many palmoplantar keratoderma ( PPK ) conditions , only Papillon - Lefevre syndrome ( PLS ) and Haim - Munk syndrome ( HMS ) are associated with premature periodontal destruction .
 palmoplantar keratoderma ( PPK ) conditions, Papillon - Lefevre syndrome, PLS, Haim - Munk syndrome, HMS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 palmoplantar keratoderma ( PPK ) conditions, Papillon - Lefevre syndrome, PLS, Haim - Munk syndrome, HMS