diff --git a/source/guides/study-management.rst b/source/guides/study-management.rst
index 5f5a6332aa4d989c079f2fe4f2dfcda21b37f13b..464891157abc018c3cfcd007e224bb9195eab318 100644
--- a/source/guides/study-management.rst
+++ b/source/guides/study-management.rst
@@ -190,8 +190,8 @@ your study:
 Manage study pseudonym domains
 ------------------------------
 
-In the **Pseudonym domains** tab you can add a new domain or change the name of
-an existing domain.
+In the **Pseudonym domains** tab you can create, rename, and delete pseudonym
+domains.
 
 If there are general domains you can also define which general domains need to
 be accessed in the context of this study.
diff --git a/source/pseudonyms.rst b/source/pseudonyms.rst
index 0db10c071f522db07eb15b2aaf8546f771e7766e..61366639fb4469e7b031d1bc40516eb18b9e3583 100644
--- a/source/pseudonyms.rst
+++ b/source/pseudonyms.rst
@@ -60,6 +60,17 @@ Relevant guides:
 -   :ref:`subject-get-pseudonym`
 -   :ref:`subject-delete`
 
+Deleting domains
+----------------
+
+It is possible to delete a domain and all related pseudonyms. Once a pseudonym
+is deleted, it is no longer possible to find the corresponding contact
+information. Note, however, that additional steps might be necessary for full
+anonymization of scientific data (e.g. image data).
+
+The date when a study domain should be deleted is usually defined in the ethics
+application and the study consent form.
+
 How pseudonyms are generated
 ----------------------------