A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
(0-9)
Obesity - body mass index
Obtundation
Odynophagia
Oligodontia
Oliguria
Onycholysis
Open comedones
Ophthalmalgia
Opisthotonos
Opisthotonos - decerebrate posture
Oral dryness
Oral malodor
Orchalgia
Orchitis
Orthopnea
Otalgia
Otitis media - tinnitus
Otorrhea
Overactive bladder
Overactive bladder (OAB) syndrome
Overbreathing
Overeating - compulsive
Overweight
Overweight - body mass index
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