וַיֵּצֵא֙ הַשָּׂטָ֔ן מֵאֵ֖ת פְּנֵ֣י יְהוָ֑ה וַיַּ֤ךְ אֶת־אִיּוֹב֙ בִּשְׁחִ֣ין רָ֔ע מִכַּ֥ף רַגְל֖וֹ עד [וְעַ֥ד] קָדְקֳדֽוֹ׃
So Satan went forth from the presence of the LORD, and smote Job with sore boils from the sole of his foot even unto his crown.
Read kabbalistic (mystical) interpretation of Job 2:7: and classical mystical sources.