2. DEFINITION
• RHINITIS – Inflammation of mucous membrane of
nose
• ALLERGIC RHINITIS – Inflamation due to the
reaction in nasal mucosa from repeated allergen
exposures that causes hypersensitivity
• Characterised by watery nasal discharge , nasal
obstruction, sneezing and itching in nose
• Prevalance – 15-20%
• Higher in pediatric age group
3.
4. •Symptoms appear only
in particular seasons
SEASONAL
•Symptoms present
throughout the year
PERENNIAL
6. Inhaled allergen produces specific
IgE antibody in predisposed
individuals
This antibody gets fixed to the
blood basophils or tissue mast cells
On subsequent exposure antigen
combine with IgE antibody
Causes degranulation of mast cells
with release of several chemical
mediators
7. • Tissue oedema
• Result- Nasal
blockage
Increased
vascular
permeability
& dilatation
• Result-
Bronchospasm
Change in
smooth
muscle tone
• Increased secretion
• Result - Rhinorrhoea
Hyperactivity
of glands
•Histamine
•Heparin
•Prostagland
ins
•Leucotriene
•ECF-A
•NCF-A
•PAF
8. • 5-30 min after exposure
• Sneezing, Rhinorrhoea, Nasal
blockage, Bronchospasm
• Due to release of vasoactive
amines
Acute
phase
• 2-8 hrs
• Due to the infiltration of
inflamatory cells at the site
causing swelling , congestion,
thick secretion
Late
phase
13. Pharyngeal and laryngeal signs
• Pharyngitis due to hyperplasia of submucosal
lymphoid tissue
• In children prolonged mouth breathing as
seen in adenoid hyperplasia
• Hoarseness of voice
• Oedema of vocal cords
15. INVESTIGATIONS
• Eosinophil count
• Nasal smear- large no. of eosinophils
• Skin test- to identify specific allergen
• Total IgE –Rarely helpful as 50 % have IgE in
normal level
• Specific IgE – Radioallergosorbent test (RAST)
Measures IgE antibody concentration
• Nasal provocation test – Ask the pt to sniff small
amount of allergen and observe for allergic
symptoms
22. VATAJA PITTAJA KAPHAJA
Nasal blockage High T , Thirst Dyspnoea
Dryness of throat,
palate,lips
Yellow hot nasal
secretion
White cold secretion
Hoarseness of voice Emaciation Swollen eyes
Thin secretion from
nose
Ulceration on tip of
nose
Heaviness in head
and face
Pricking pain in
temples
Giddiness Itching in nose,
throat,palate,lips
More sneezing Hot fumes from nose
AH.U.19 & Su.U.24
28. AVOID ALLERGENS
• Avoid pet animals inside home
• Wash the pet weekly
• Regulation of ventilations and humidity of home
• Avoid walking in open grassy spaces during hot
dry days
• Keep windows closed
• Use face mask when going out
• Change of work place if it is a cause
• Live in pollution free environment