So skin-prick and blood tests for allergy are negative, but there are IgE antibodies produced in the nose that react to a specific allergen. Intradermal skin testing may also be negative.The symptoms of local allergic rhinitis are the same as the symptoms of allergic rhinitis, including symptoms in the eyes. Just as with allergic rhinitis, people can have either seasonal or perennial local allergic rhinitis. The symptoms of local allergic rhinitis can be mild, moderate, or severe. Local allergic rhinitis is associated with conjunctivitis and asthma.In one study, about 25% of people with rhinitis had local allergic rhinitis. In several studies, over 40% of people having been diagnosed with nonallergic rhinitis were found to actually have local allergic rhinitis. Steroid nasal sprays and oral antihistamines have been found to be effective for local allergic rhinitis.As of 2014, local allergenic rhinitis had mostly been investigated in Europe; in the United States, the nasal provocation testing necessary to diagnose the condition was not widely available. : 617

Prevention
Prevention often focuses on avoiding specific allergens that cause an individuals symptoms. These methods include not having pets, not having carpets or upholstered furniture in the home, and keeping the home dry.
Abnormal liver function tests are commonly used to help in diagnosis as the spleen and liver are strongly affected by one another. Splenomegaly
If rheumatoid arthritis is present and other symptoms occur that are not commonly found within RA itself, such as a palpable spleen, further testing should be done. A palpable spleen is not always a clinical significance, therefore CT scan, MRI, or ultrasound can be administered in order to help diagnose the condition. According to Poulin et al., dimensional guidelines for diagnosing splenomegaly are as follows:
Moderate if the largest dimension is 11–20 cm
Severe if the largest dimension is greater than 20 cm

Rheumatoid arthritis
RA in patients with Feltys syndrome is chronic (after 10–15 years), and presents with increased severity along with extra articular manifestations. RA can be mistaken for other conditions such as gout if not clinically diagnosed. Diagnosis can be confirmed by use of X-rays or synovial fluid analysis. Treatment
There is no real treatment for Feltys syndrome, rather the best method in management of the disease is to control the underlying rheumatoid arthritis. Immunosuppressive therapy for RA often improves granulocytopenia and splenomegaly; this finding reflects the fact that Feltys syndrome is an immune-mediated disease. A major challenge in treating FS is recurring infection caused by neutropenia. Therefore, in order to decide upon and begin treatment, the cause and relationship of neutropenia with the overall condition must be well understood. Most of the traditional medications used to treat RA have been used in the treatment of Feltys syndrome.