Discussion
There are several barriers to receiving AIT for active-duty patients with allergies. Due to previous skin test extracts, our patient had become desensitized to them. Though he had received aeroallergen immunotherapy with success for 18 months, the patients had to restart the build up phase of AIT due to a military-related move.
For patients to benefit from AIT, they must build up and maintain their immunotherapy injections for at least 3 to 5 years.4 The build-up period of immunotherapy lasts about 3 to 4 months. Patients typically receive weekly injections until they reach a maintenance immunotherapy dose of 0.5 mL of a 1:1 concentration ratio.4
Frequent deployments or temporary duty assignments are other barriers to AIT for active-duty patients. AIT is not usually given on deployments or temporary duty assignments unless the patient is located near a major military medical center. The US Air Force and Army operate allergy extender clinics at smaller bases and overseas locations to facilitate the maintenance of immunotherapy for military patients. Primary care physicians act as allergy extenders. These smaller allergy clinics are supervised by regional allergists at major military medical centers via telehealth and electronic/telephonic communication. These allergy clinics are not more widely available because there are not enough allergists and allergy medical technicians.
Allergen immunotherapy is not standardized, meaning civilian allergists use different aeroallergen immunotherapy formulations. While AIT is standardized in the US military through the Extract Laboratory Management System (ELMS), many active-duty patients are evaluated by civilian allergists in the TRICARE system who do not use ELMS, and when they move, AIT is not maintained.
Because up to 25% of active-duty personnel suffer from allergic rhinoconjunctivitis and AIT is not administered in many deployed settings, this issue could affect mission readiness and capabilities.3-6 These personnel may suffer from frequent and severe nasal and ocular allergy symptoms without being able to continue AIT. There is the potential for adverse effects on the military missions because of these impaired military personnel.5,6
Potential steps to improve the availability of allergen immunotherapy in the deployed setting include training deployed physicians, medical technicians, and other health care practitioners in administering and treating AIT so deployed personnel can receive therapy. Additionally, AIT should be standardized and ordered via the ELMS. Civilian allergists should be highly encouraged to use ELMS. This would create standardization of AIT for all active-duty allergy patients. The allergy extender system could be expanded to all military treatment facilities to provide easy access to allergen immunotherapy. The US Navy has the fewest allergists and allergy extenders, and would need to expand its network of allergy extenders to provide AIT at its health care facilities.
Conclusions
We present an active-duty servicemember with allergic rhinoconjunctivitis to trees, grasses, weeds, cats, dogs, dust mites, mold, and horses who had intermittent therapy that was interrupted by deployments. Our case highlights the difficulty of managing AIT in the military health system due to frequent moves, deployments, and temporary duty assignments. We also suggest steps that could help expand AIT for military personnel, including those deployed internationally.