autoload/lsp/diag.vim |  9 +++++++++
 autoload/lsp/lsp.vim  |  4 +++-
 doc/lsp.txt           | 13 +++++++++++--
 test/clangd_tests.vim |  2 +-

diff --git a/autoload/lsp/diag.vim b/autoload/lsp/diag.vim
index 6af75cf88eaefc5ad3469e741e28c33ee97ba829..49473832f06394378f5a7abd52e068332f581c12 100644
--- a/autoload/lsp/diag.vim
+++ b/autoload/lsp/diag.vim
@@ -894,6 +894,15 @@     endif
   endfor
 enddef
 
+# Toggle the LSP diagnostics highlighting in all the buffers
+export def DiagsHighlightToggle()
+  if opt.lspOptions.autoHighlightDiags
+    DiagsHighlightDisable()
+  else
+    DiagsHighlightEnable()
+  endif
+enddef
+
 # Some options are changed.  If 'autoHighlightDiags' option is changed, then
 # either enable or disable diags auto highlight.
 export def LspDiagsOptionsChanged()
diff --git a/autoload/lsp/lsp.vim b/autoload/lsp/lsp.vim
index 154f861e9e08e91922b899717e5c4b944da70927..1ed7b8d2541b0f3ca6efbc7381b47fc9bc399448 100644
--- a/autoload/lsp/lsp.vim
+++ b/autoload/lsp/lsp.vim
@@ -1177,7 +1177,7 @@ enddef
 
 # Command-line completion for the ":LspDiag highlight" command
 def LspDiagHighlightComplete(arglead: string, cmdline: string, cursorPos: number): list<string>
-  return LspSubCmdComplete(['enable', 'disable'], arglead, cmdline, cursorPos)
+  return LspSubCmdComplete(['enable', 'disable', 'toggle'], arglead, cmdline, cursorPos)
 enddef
 
 # Command-line completion for the ":LspDiag" command
@@ -1216,6 +1216,8 @@       if subcmd == 'enable'
 	diag.DiagsHighlightEnable()
       elseif subcmd == 'disable'
 	diag.DiagsHighlightDisable()
+      elseif subcmd == 'toggle'
+	diag.DiagsHighlightToggle()
       else
 	util.ErrMsg($':LspDiag highlight - Unsupported argument "{subcmd}"')
       endif
diff --git a/doc/lsp.txt b/doc/lsp.txt
index a318be4b0678b60e29fa7eb7fd0b5492c69ca913..c2743c48a2b8cc88fc891c8d5379f3109e4efaca 100644
--- a/doc/lsp.txt
+++ b/doc/lsp.txt
@@ -3,7 +3,7 @@
 
 Author: Yegappan Lakshmanan  (yegappan AT yahoo DOT com)
 For Vim version 9.0 and above
-Last change: Feb 13, 2024
+Last change: Sep 30, 2024
 
 ==============================================================================
 CONTENTS                                                     *lsp-contents*
@@ -84,6 +84,9 @@ 			Disable highlighting lines with a diagnostic message
 			for the current Vim session.
 :LspDiag highlight enable
 			Enable highlighting lines with a diagnostic message
+			for the current Vim session.
+:LspDiag highlight toggle
+			Toggle highlighting lines with a diagnostic message
 			for the current Vim session.
 :LspDiag last		Jump to the last diagnostic message for the current
 			buffer.
@@ -757,6 +760,11 @@ 			Enable highlighting lines with a diagnostic message
 			for the current Vim session.  Note that highlighting
 			lines with a diagnostic message is enabled by default.
 
+:LspDiag highlight toggle			*:LspDiag-highlight-toggle*
+			Toggle (enable or disable) highlighting lines with a
+			diagnostic message for the current Vim session in all
+			the buffers.
+
 						*:LspDiag-last*
 :LspDiag last		Jumps to the location of the first diagnostic message
 			for the current file.
@@ -1458,7 +1466,8 @@
 If you wish to temporarily disable the automatic diagnostic highlighting for
 the current Vim session, you can achieve this using the ":LspDiag highlight
 disable" command.  When you want to re-enable the highlighting, you can use
-the ":LspDiag highlight enable" command.
+the ":LspDiag highlight enable" command.  To toggle the highlighting, you can
+use the ":LspDiag highlight toggle" command.
 
 To permanently disable the automatic highlighting of diagnostics, you can set
 the "autoHighlightDiags" option to |v:false| in your .vimrc file.  This
diff --git a/test/clangd_tests.vim b/test/clangd_tests.vim
index dc3eeee8a7ca2603f0555573f7ad07806e0710b2..b78644eabcd089a19bed07fe695914e2ba9eeeb8 100644
--- a/test/clangd_tests.vim
+++ b/test/clangd_tests.vim
@@ -1637,7 +1637,7 @@
   feedkeys(":LspDiag \<C-A>\<CR>", 'xt')
   assert_equal('LspDiag first current here highlight last next nextWrap prev prevWrap show', @:)
   feedkeys(":LspDiag highlight \<C-A>\<CR>", 'xt')
-  assert_equal('LspDiag highlight enable disable', @:)
+  assert_equal('LspDiag highlight enable disable toggle', @:)
   assert_equal(['Error: :LspDiag - Unsupported argument "xyz"'],
 	       execute('LspDiag xyz')->split("\n"))
   assert_equal(['Error: :LspDiag - Unsupported argument "first xyz"'],