Anti-Histamines
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Histamine H1-receptor antagonists
These are mostly effective against mast cell activated inflammatory reactions. In asthma, mast cells are involved in the early stages of the reaction, but their role is not great enough to respond to therapeutic modification.
These drugs are useful in patients with very mild atopic asthma, such as in cases of hay fever.
These are not used in the management of respiratory conditions.

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Dr Tom Leach

Dr Tom Leach MBChB DCH EMCert(ACEM) currently works as a GP Registrar and an Emergency Department CMO in Australia. He is also a Clinical Associate Lecturer at the Australian National University. After graduating from his medical degree at the University of Manchester in 2011, Tom completed his Foundation Training at Bolton Royal Hospital, before moving to Australia in 2013. He started almostadoctor whilst a third year medical student in 2009. Read full bio

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