diff --git a/homeassistant/components/twitch/config_flow.py b/homeassistant/components/twitch/config_flow.py
index 7f006f194f5..dbaef59c236 100644
--- a/homeassistant/components/twitch/config_flow.py
+++ b/homeassistant/components/twitch/config_flow.py
@@ -9,7 +9,7 @@ from typing import Any, cast
 from twitchAPI.helper import first
 from twitchAPI.twitch import Twitch
 
-from homeassistant.config_entries import ConfigEntry, ConfigFlowResult
+from homeassistant.config_entries import SOURCE_REAUTH, ConfigFlowResult
 from homeassistant.const import CONF_ACCESS_TOKEN, CONF_TOKEN
 from homeassistant.helpers import config_entry_oauth2_flow
 from homeassistant.helpers.config_entry_oauth2_flow import LocalOAuth2Implementation
@@ -23,7 +23,6 @@ class OAuth2FlowHandler(
     """Config flow to handle Twitch OAuth2 authentication."""
 
     DOMAIN = DOMAIN
-    reauth_entry: ConfigEntry | None = None
 
     def __init__(self) -> None:
         """Initialize flow."""
@@ -63,8 +62,8 @@ class OAuth2FlowHandler(
 
         user_id = user.id
 
-        if not self.reauth_entry:
-            await self.async_set_unique_id(user_id)
+        await self.async_set_unique_id(user_id)
+        if self.source != SOURCE_REAUTH:
             self._abort_if_unique_id_configured()
 
             channels = [
@@ -76,38 +75,33 @@ class OAuth2FlowHandler(
                 title=user.display_name, data=data, options={CONF_CHANNELS: channels}
             )
 
-        if self.reauth_entry.unique_id == user_id:
-            new_channels = self.reauth_entry.options[CONF_CHANNELS]
-            # Since we could not get all channels at import, we do it at the reauth
-            # immediately after.
-            if "imported" in self.reauth_entry.data:
-                channels = [
-                    channel.broadcaster_login
-                    async for channel in await client.get_followed_channels(user_id)
-                ]
-                options = list(set(channels) - set(new_channels))
-                new_channels = [*new_channels, *options]
-
-            self.hass.config_entries.async_update_entry(
-                self.reauth_entry,
-                data=data,
-                options={CONF_CHANNELS: new_channels},
-            )
-            await self.hass.config_entries.async_reload(self.reauth_entry.entry_id)
-            return self.async_abort(reason="reauth_successful")
-
-        return self.async_abort(
+        reauth_entry = self._get_reauth_entry()
+        self._abort_if_unique_id_mismatch(
             reason="wrong_account",
-            description_placeholders={"title": self.reauth_entry.title},
+            description_placeholders={"title": reauth_entry.title},
+        )
+
+        new_channels = reauth_entry.options[CONF_CHANNELS]
+        # Since we could not get all channels at import, we do it at the reauth
+        # immediately after.
+        if "imported" in reauth_entry.data:
+            channels = [
+                channel.broadcaster_login
+                async for channel in await client.get_followed_channels(user_id)
+            ]
+            options = list(set(channels) - set(new_channels))
+            new_channels = [*new_channels, *options]
+
+        return self.async_update_reload_and_abort(
+            reauth_entry,
+            data=data,
+            options={CONF_CHANNELS: new_channels},
         )
 
     async def async_step_reauth(
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult:
         """Perform reauth upon an API authentication error."""
-        self.reauth_entry = self.hass.config_entries.async_get_entry(
-            self.context["entry_id"]
-        )
         return await self.async_step_reauth_confirm()
 
     async def async_step_reauth_confirm(