Find circular references in single table

SET NOCOUNT ON

DECLARE 
@BaseGUID uniqueidentifier,
@NextGUID uniqueidentifier,
@ParentGUID uniqueidentifier

CREATE TABLE #Temp 
(GUID uniqueidentifier)
CREATE TABLE #CircularGUIDS 
(CircGUID uniqueidentifier)

DECLARE TCursor CURSOR FAST_FORWARD LOCAL FOR
SELECT SkilGUID FROM Skills WHERE SkilGUID IS NOT NULL
OPEN TCursor

FETCH NEXT FROM TCursor INTO @BaseGUID
WHILE @@FETCH_STATUS = 0
BEGIN
TRUNCATE TABLE #Temp

SELECT @ParentGUID = SkilParentGUID FROM Skills WHERE SkilGUID = @BaseGUID
INSERT INTO #Temp (GUID) VALUES (@ParentGUID)
SET @NextGUID = @ParentGUID

NextIteration:
SELECT @ParentGUID = SkilParentGUID FROM Skills WHERE SkilGUID = @NextGUID
IF @ParentGUID NOT IN (SELECT GUID FROM #Temp) AND @ParentGUID IS NOT NULL
BEGIN
SET @NextGUID = @ParentGUID
INSERT INTO #Temp (GUID) VALUES (@ParentGUID)
GOTO NextIteration
END

IF @ParentGUID IN (SELECT GUID FROM #Temp)
BEGIN
INSERT INTO #CircularGUIDS (CircGUID) VALUES (@ParentGUID)
END

 FETCH NEXT FROM TCursor INTO @BaseGUID

END

CLOSE TCursor
DEALLOCATE TCursor

SELECT * FROM #CircularGUIDS

DROP TABLE #Temp
DROP TABLE #CircularGUIDS