Welcome to HCM,
First thing about kikuchi disease
is it is rare and it is very important to be sure of diagnosis histopathologically and rule out other possible disease with appropriate tests.
It must be confirmed by lymph node excision biopsy.
It is self limiting disorder of lymph nodes commonly involve neck glands.
Equally it is important to rule out other diseases like Tuberculosis
,Lymphoma, and viral lymphadenitis
and autoimmune disorders
like SLE.Appropriate Investigations must be done.
Lymph nodes may resolve in 6 to 8 weeks but if painful supportive therapy with Anti inflammatory drugs may be required.Kikuchi-Fujimoto disease
(KFD) is seen in Japan,once the diagnosis is confirmed and potentially other diseases are ruled out prognosis is good for this disease.
Hope this information helps
Please take good care of her.
Dr.Akhilesh Dubey M.D.