וַיֶּחֱלֶ֣א אָסָ֡א בִּשְׁנַת֩ שְׁלוֹשִׁ֨ים וָתֵ֤שַׁע לְמַלְכוּתוֹ֙ בְּרַגְלָ֔יו עַד־לְמַ֖עְלָה חָלְי֑וֹ וְגַם־בְּחָלְיוֹ֙ לֹא־דָרַ֣שׁ אֶת־יְהוָ֔ה כִּ֖י בָּרֹפְאִֽים׃
Rashi on II Chronicles
until his ailment spread upward The swelling in his feet spread from the sole of his foot to the top of his head.