People with Kikuchi disease
do NOT have positive ANA, RF, dsDNA antibodies or other autoantibodies hence it differs from SLE. It is a form of necrotising lymphadenitis
that is self limiting and I hope the diagnosis was made on a lymph node biopsy
Pain relief medication (NSAIDs) and low dose corticosteroids
if the neck glands are consistently raised are treatment options.
Triggers are not known for now.