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Diphtheria is a contagious bacterial infection that mainly affects the nose and throat.
Our Health A-Z contains more information on Diphtheria.
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Altitude sickness is a common condition that can happen when you climb to a high altitude too quickly.
Our Health A-Z contains more information on High altitude pulmonary oedema.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.