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How do I tell the difference between poison oak and poison ivy

A 34-year-old member asked:
Dr. Wm. Marcus Spurlock
40 years experience Preventive Medicine
Plant allergy: Poison ivy has leaves of 3 and smooth edges. Poison oak has leaves of 3 and has rough edges like an oak leaf. They both cause blister like rashes to ... Read More
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Dr. Luis Matos
45 years experience Pediatric Allergy and Asthma
Compare plants: Poison ivy grows along the ground and up on trees sticking to the bark. Like ivy. Poison oak grows like a bush. The reactions when an allergic patie ... Read More
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A 37-year-old member asked:
Dr. James Ferguson
46 years experience Pediatrics
Difference in leaf: The poison ivy is leaf is composed of three parts on the same level each the shape of an arrow head. See www.Poisoncontrol.Org on their plant section ... Read More
Dr. Luis Matos
45 years experience Pediatric Allergy and Asthma
Look for pictires: The plants are different. Poison oak and summac grow like a bush and poison ivy grows as a vine along the ground or up tree trunks. The reactions th ... Read More
Dr. J. Lawrence Dohan
57 years experience Dermatology
Where are you?: Poison ivy is east coast. Poison oak is west coast.
A 33-year-old member asked:
Dr. Linda Green
45 years experience Pediatric Allergy and Asthma
Same allergy: Both poison ivy and poison oak.Contain the same allergen which can cause contact dermatitis in susceptible individuals. The reaction and treatment ... Read More
A 44-year-old member asked:
Dr. James Ferguson
46 years experience Pediatrics
Leaf shape: The Ivy has a leaf shape more pointed like an arrow point.The poison oak has rounded lobed. Both have a palmate (palm like) shape with 3 leaflets orig ... Read More
A 23-year-old member asked:
Dr. Wm. Marcus Spurlock
40 years experience Preventive Medicine
Plants: The shape of the leaf is the only difference. Poison ivy is a smooth border. Poison oak is rugged and shaped like an oak leaf. Both plants have bra ... Read More
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A 46-year-old member asked:
Dr. Sarah Kohl
35 years experience Travel Medicine
Poison ivy vs. oak: Poison ivy and oak are two different planst which have an oil whic causes an allergic rash. The characteristic rash you see is the result of your own ... Read More
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A 35-year-old member asked:
Dr. James Ferguson
46 years experience Pediatrics
The plant involved: These are two different plants ; both produce the rheus antigen responsible for the identical contact dermatitis. The leaves of the plant are similar ... Read More
A 33-year-old member asked:
Dr. Andrew Murphy
29 years experience Allergy and Immunology
Not much: Poison ivy and poison oak are both plants that can cause a contact dermatitis. The rash will look the same from both of these plants.
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A 42-year-old member asked:
Dr. Michael P Vaughn
34 years experience Allergy and Immunology
Poison ivy: There is very little difference in the reactions caused by poison ivy and poison oak. Both typically require 10 or more days of oral steroids followed ... Read More
A 42-year-old member asked:
Dr. Michael Fisher
32 years experience Dermatology
Poison Ivy: Everywhere in the us and southern canada except the far west, deserts and at high altitude. In the west they have poison oak, which is very similar. B ... Read More

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