RT Book, Section
A1 Cahill, Katherine N.
A1 Boyce, Joshua A.
A2 Jameson, J. Larry
A2 Fauci, Anthony S.
A2 Kasper, Dennis L.
A2 Hauser, Stephen L.
A2 Longo, Dan L.
A2 Loscalzo, Joseph
SR Print(0)
ID 1177737124
T1 Allergic Rhinitis
T2 Harrison's Principles of Internal Medicine, 20e
YR 2018
FD 2018
PB McGraw-Hill Education
PP New York, NY
SN 9781259644016
LK accesspharmacy.mhmedical.com/content.aspx?aid=1177737124
RD 2022/05/20
AB Rhinitis  is  characterized  by  sneezing;  rhinorrhea;  obstruction  of  the  nasal  passages;  conjunctival,  nasal,  and  pharyngeal  itching;  and  lacrimation  and  can  be  classified  as  allergic  or  non-allergic.  A  clinical  history  of  rhinitis  symptoms  occurring  in  a  temporal  relationship  to  allergen  exposure  and  documentation  of  sensitization  to  an  environmental  allergen  are  required  for  a  diagnosis  of  allergic  rhinitis.  Although  commonly  seasonal  due  to  elicitation  by  airborne  pollens,  it  can  be  perennial  in  an  environment  of  chronic  exposure  to  house  dust  mites,  animal  danders,  or  insect  (cockroach)  products.  The  overall  prevalence  in  North  America  has  increased  in  the  past  20  years  and  is  10–30%,  with  the  peak  prevalence  of  >30%  occurring  in  the  fifth  decade.