diff --git a/mkdocs/docs/HPC/FAQ.md b/mkdocs/docs/HPC/FAQ.md
index 4e9ac13b033..d649e2ef91d 100644
--- a/mkdocs/docs/HPC/FAQ.md
+++ b/mkdocs/docs/HPC/FAQ.md
@@ -325,6 +325,18 @@ Note that it is still preferred to submit a software installation request,
 as the software installed by the HPC team will be optimized for the HPC environment.
 This can lead to dramatic performance improvements.
 
+!!! warning
+    Do not use `pip install --user` to install software, as this places packages 
+    in `~/.local/lib/python*/site-packages`, potentially causing conflicts with software installed by the HPC team. 
+    
+    Also, avoid using `pip install --prefix` or `pip install --target` with `$PYTHONPATH`, 
+    since `$PYTHONPATH` is a global setting that affects all Python versions.
+    When `$PYTHONPATH` includes directories with packages from different Python versions, it can lead to conflicts. 
+
+    Instead, use a Python virtual environment for package installations in your home directory. 
+    For guidance on setting up virtual environments, 
+    refer to the [Python virtual environments setup guide](./setting_up_python_virtual_environments.md).
+
 ### Is my connection compromised? Remote host identification has changed
 
 On Monday 25 April 2022, the login nodes received an update to RHEL8.