decongestant antihistamine anticholinergic Index

    Related Diseases & Conditions

    • Sinus Infection (Sinusitis) Sinus infection (sinusitis) is caused by allergies, infection, and chemicals or other irritants of sinuses. Signs and symptoms...learn more »
    • Hay Fever (Allergic Rhinitis) Hay fever (allergic rhinitis) is an irritation of the nose caused by pollen and is associated with the following allergic...learn more »
      In This Article
      Hay Fever (Allergic Rhinitis) Article
      • Hay fever facts
      • What is hay fever? What are hay fever symptoms and signs?
      • Why does an allergic reaction occur?
      • What causes allergic rhinitis?
      • What are risk factors for allergic rhinitis?
      • When and where does allergic rhinitis occur?
      • Is allergic rhinitis contagious?
      • How is allergic rhinitis diagnosed, and how are allergies identified?
      • What is the treatment for allergies?
      • What is the prognosis of allergic rhinitis?
      • Is it possible to prevent allergic rhinitis?
    • Common Cold The common cold (viral upper respiratory tract infection) is a contagious illness that may be caused by various viruses. Symptoms...learn more »
    • What Is Mucus? Mucus is a normal substance produced by lining tissues in the body. Excess mucus or mucus that is yellow, green, brown, or bloody...learn more »

Related FAQs, Doctor's & Expert's Views

Health Features

Tools & References