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Allergy & Immunology

Dr. Brian Brennan is a board-certified Allergist/Immunologist who treats a wide range of patients in our Fergus Falls Main Clinic, including conditions such as:

  • Allergies
  • Asthma, including treatment plans for asthmatics
  • Hay fever
  • Sinus trouble
  • Eczema
  • Hives
  • Recurrent sinus infections
  • Recurrent bronchitis
  • Chronic cough
  • Eosinophilic esophagitis

Testing and treatment is also offered for:

  • Allergy skin testing – Foods and airborne
  • Immunotherapy – allergy injections
  • Office pulmonary function testing
  • Biologics – for treatment of severe asthma, atopic dermatitis, and chronic urticaria