When H1 receptors are stimulated by histamine it may produce allergic reactions such as itching, hay fever and rash or hives.Antihistamines treat the symptoms of allergic reactions.
The general approach in doing that is to specify your therapeutic objective, to make an inventory of possible treatments, and to choose your ‘P(ersonal) treatment’, on the basis of a comparison of their efficacy, safety, suitability and cost.This process of choosing your P-treatment is summarized in this chapter and discussed in more detail in Part 2 of this manual.Specify your therapeutic objective In this example we are choosing our P-treatment for the suppression of dry cough.Make an inventory of possible treatments In general, there are four possible approaches to treatment: information or advice; treatment without drugs; treatment with a drug; and referral. For dry cough, information and advice can be given, explaining that the mucous membrane will not heal because of the cough and advising a patient to avoid further irritation, such as smoking or traffic exhaust fumes.A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition.
Each drug can be classified into one or more drug classes.
Antihistamines are drugs that inhibit the action of histamine in the body by blocking the receptors of histamine.
There are two types of histamine receptors H1 and H2.
Specific non-drug treatment for this condition doesn’t exist, but there are a few drugs to treat a dry cough.
You should make your personal selection while still in medical school, and then get to know these ‘P(ersonal) drugs’ thoroughly.
In the case of dry cough an opioid cough suppressant or a sedative antihistamine could be considered as potential P-drugs.