Mast cell stabilizers are prescribed for a variety of conditions, including:

• Allergies. Exaggerated or inappropriate reaction of the immune system to any substance that in most people causes no symptoms. Mast cell stabilizers help reduce many of the symptoms associated with some allergic conditions, including:
  
  
• • Allergic rhinitis (hay fever). Inflammation of the mucous membrane that lines the nose due to an allergic reaction to pollen, dust, dust mites or other airborne substance. Mast cell stabilizer nasal sprays are available to prevent the symptoms associated with this condition, including runny, itchy or stuffy nose and sneezing.
    
    

    
    

  • Allergic conjunctivitis. Inflammation of the tissue lining the inside of the eyelid (conjunctiva), caused by an allergic reaction. Mast cell-stabilizing eye drops are available to prevent itchiness associated with this condition.
    

    
    
    

  • Allergic sinusitis. Inflammation of the lining of the sinus cavities in the face caused by an allergic reaction. Mast cell-stabilizing nasal sprays are available to treat this condition.
    
    

    
    

     
• Allergic asthma. Condition in which the airways become blocked or narrowed as the result of an allergic reaction. Mast cell stabilizers reduce or prevent symptoms, such as shortness of breath and difficulty breathing.
  
  

  
  

• Mastocytosis. Group of disorders caused by the presence of too many mast cells in a person’s body. Mast cell stabilizers help reduce the number of mast cells.