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Symptoms of allergies:
sneezing
runny nose
thin, clear mucus
wheezing
red, watery eyes
symptoms can last for days or months after contact with allergies
Symptoms of cold:
sneezing
runny nose
thick, dark mucus
sore throat
body aches
symptoms take about three days to appear and usually last for about a week
Non drug treatment of allergic rhinitis:
avoiding exposure to known or suspected allergen
vacuuming carpets, drapes, and upholstery with HEPA vacuum cleaner
What are common allergens?
pollens
molds
dust mites
animal dander
Nasal irrigation
combined with distilled, sterile or previously boiled and cooled water.
tap water should not be used.
can be administered using a syringe or neti pot, then pour into one nostril and drained out of the other nostril while breathing through the mouth
What are 1st line medications for chronic, moderate to severe symptoms?
intranasal steroids
1st line treatment for milder, intermittent symptoms:
oral antihistamines
MOA of intranasal steroids:
work by decreasing inflammation.
Intranasal steroid medications:
budesonide (Rhinocort allergy)
fluticasone (Flonase allergy relief, Flonase sensimist, children’s Flonase)
triamcinolone ( nasacort allergy 24 HR, nasacort allergy 24 HR children)
beclomethasone (Becconase AQ)
Side effects of intranasal steroids:
epistaxis
What is the preferred nasal steroid during pregnancy?
budesonide and beclomethasone
How long can it take to see relief from intranasal steroids?
up to 1 week to get full relief
1st generation oral antihistmaines:
diphenhydramine (benadryl)
chlorpheniramine (Aller-chlor)
doxylamine (unisom)
dosing of benadryl:
adult: 25 mg by mouth every 4-6 hours or 50 mg by mouth every 6-8 hours
do not use OTC in children < 6 years old unless directed by healthcare provider
Warnings in 1st generation oral antihistamines:
avoid in elderly patients and children < 2 years old
prostate enlargement
use with caution in patients with glaucoma
Side effects of 1st generation antihistamines:
somnolence
cognitive impairment
strong anticholinergic side effects
Second generation oral antihistamines:
cetirizine (Zyrtec allergy, Zyrtec children’s allergy) + pseudoephedrine ( Zyrtec-D)
levocetirizine (Xyzal allergy 24 HR, Xyzall ALLergy 24 HR children)
fexofenadine (allegra allergy, allegra allergy childrens) + pseudoephedrine (Allegra-D)
loratadine (Claritin, claritin children’s) + pseudoephedrine (Claritin-D)
Most sedating 2nd generation antihistamines:
cetirizine
levocetirizine
Less sedating 2nd generation antihistmine:
fexofenadine
loratadine
MOA of decongestants:
alpha adrenergic gonists that causes vasoconstriction.
Systemic oral decongestants:
phenylephrine (Sudafed PE)
Pseudoephedrine (Sudafed, Nexafed, Zephrex-D
Contraindication to systemic oral decongestant:
do not use within 14 days of MAO inhibitors
Warnings for systemic oral decongestants:
avoid in children <2 years (FDA) and <4 years (package labeling)
use with caution in patients ith CV disease and uncontrolled hypertension
can increase the IOP ( caution in glaucoma patients)
avoid during the 1st trimester of pregnancy
Side effects of systemic oral decongestants:
cardiovascular stimulation: tachycardia, palpitations, increased BP
CNS stimulation: anxiety, tremors, insomnia
decreased appetite
Intranasal decongestants:
oxymetazoline (Afrin)
Side effects of intranasal decongestants:
rhinitis
medicamentosa( rebound congestion if used longer than 3 days)
What is the maximum pseudoephedrine allowed for purchase?
3.6 grams per day
9 gram in a 30 day period
Intranasal cromolyn: NasalCrom
mast cell stabilizer used for treatment and prophylaxis of allergic rhinitis
used regularly not PRN
Medication commonly used in children for allergic rhinitis and asthma:
montelukast: singulair
What is a preventative treatment for allergies?
immunotherapy
Common cold:
a viral infection of upper respiratory tract.
transmitted by mucus secretions or by the air
Natural drug treatment for colds:
zinc
vitamin C: ascorbic acid
echinacea
airborne
emergen-C
BY how long does vitamin C decrease the duration of a cold?
it decreases it by 1-1.5 days at doses of 1-3 grams per day
Expectorants:
guaifenesin ( mucinex, robiitussin mucus + chest congestion, robafen) + dextromethorphan ( robafen DM, robitussin DM)
When are expectorants used?
for productive cough to help thin the mucus
Cough seppressants:
dextromethorphan (Delsym, robafen cough, robitussin cough) + guaifenesin ( robafen DM, robitussin DM)
codeine
benzonatate (tessalon perles)
diphenhydramine (benadryl)
Contraindications to dextromethorphan:
do not use within 14 days of an MAO inhibitor
Warnings of dextromethorphan:
serotonin syndrome
Boxed warning for codeine products used for cough suppressants:
respiratory depression and death have occurred in children who received codeine following tonsillectomy and/or adenoidectomy and had evidence of ultra rapid metabolizers.
Contraindications to codeine products:
do not use in children < 12 years of age or in children < 18 years of age after tonsillectomy and/or adenoidectomy
FDA recommends avoiding codeine cough and cold products:
patients <18 years of age
cough and cold combination products:
dextromethorphan/promethazine
brompheniramine/pseudoephedrine/dextromethorphan (bromfed DM)
promethazine/codeine: C-V
chlorpheniramine/hydrocodone (tussicaps): C-II
Children < 4 years old avoid:
OTC cough and cold products
Children < 2 years avoid:
OTC cough and cold products
promethazine
topical menthol and camphor
Children < 18 years old avoid:
codeine and hydrocodone contianing cough and cold products