diff --git a/docs/topics/Profiles.md b/docs/topics/Profiles.md
index 64ba20a..b78b32a 100644
--- a/docs/topics/Profiles.md
+++ b/docs/topics/Profiles.md
@@ -1,5 +1,22 @@
 # Profiles
 
+Member and officer profiles are the foundation of the system.
+There are two types of profiles: member profiles and officer profiles.
+
+## Officer Profiles
+
+Officer profiles are created by the system administrator. They are used to
+authenticate officers, and to track their activity.
+
+The primary difference between member and officer profiles is that officer
+profiles have a `role` field. This field is used to determine what permissions
+the officer has.
+
+## Member Profiles
+
+Member profiles are created by an officer. Members cannot log in. The sole 
+purpose of member profiles is to store information about members.
+
 <seealso>
     <category ref="profiles">
         <a href="Member-Profiles.md" />