The Talmud extensively discusses the consequences of anger: one who becomes angry is ruled by all forms of Gehinom, loses wisdom, and even a prophet loses his prophecy when angry (citing Moses' errors caused by anger).
אָמַר רַבִּי שְׁמוּאֵל בַּר נַחְמָנִי אָמַר רַבִּי יוֹנָתָן: כׇּל הַכּוֹעֵס כׇּל מִינֵי גֵיהִנָּם שׁוֹלְטִין בּוֹ, שֶׁנֶּאֱמַר: ״וְהָסֵר כַּעַס מִלִּבֶּךָ וְהַעֲבֵר רָעָה מִבְּשָׂרֶךָ״, וְאֵין ״רָעָה״ אֶלָּא גֵּיהִנָּם, שֶׁנֶּאֱמַר: ״כֹּל פָּעַל ה׳ לַמַּעֲנֵהוּ וְגַם רָשָׁע לְיוֹם רָעָה״. וְלֹא עוֹד אֶלָּא שֶׁהַתַּחְתּוֹנִיּוֹת שׁוֹלְטוֹת בּוֹ, שֶׁנֶּאֱמַר: ״וְנָתַן ה׳ לְךָ שָׁם לֵב רַגָּז וְכִלְיוֹן עֵינַיִם וְדַאֲבוֹן נָפֶשׁ״, אֵיזֶהוּ דָּבָר שֶׁמְּכַלֶּה אֶת הָעֵינַיִם וּמַדְאִיב אֶת הַנֶּפֶשׁ — הֱוֵי אוֹמֵר: אֵלּוּ הַתַּחְתּוֹנִיּוֹת.
§ Apropos the verse “There the wicked cease from troubling,” the Gemara cites a related statement: Rabbi Shmuel bar Naḥmani said that Rabbi Yonatan said: Anyone who gets angry, all kinds of Gehenna rule over him, because anger causes him to transgress all kinds of severe sins, as it is stated: “Therefore remove vexation from your heart and put away evil from your flesh” (Ecclesiastes 11:10), and the evil mentioned is nothing other than Gehenna, as it is stated: “The Lord has made everything for His own purpose and even the wicked for the day of evil” (Proverbs 16:4), which is interpreted to mean that ultimately the day of the evildoer in Gehenna will arrive. And not only that, but also hemorrhoids will control him, as it is stated: “But the Lord shall give you there a trembling heart, and failing of eyes, and languishing of soul” (Deuteronomy 28:65). Which is the matter of sickness that causes failing of the eyes in pain and causes languishing of the soul? You must say this is referring to hemorrhoids.