Psoriasis is more common in African Americans than Caucasians. The data showed that African Americans have a higher rate of psoriasis than Caucasians despite the initial hypothesis that psoriasis would be more common in Caucasians due to dry skin from temperature changes. African Americans experience more humid conditions that cause dry, irritated skin, increasing the concentration of irritants and risk of psoriasis compared to Caucasians living in more tropical climates. Maintaining moisturized skin can help prevent psoriasis flare-ups.

1. FREQUENCY OF PSORIASIS BASED ON
ETHNICITY AND LOCATION
ASMITA LAMA

2. DESCRIPTION
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Psoriasis is a long term skin disorder.
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Psoriasis is caused when the immune system overreacts by
causing the inflammation of the skin.
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Psoriasis can also run in genetics.
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Psoriasis is also caused by a cold and dry climate,
infections, stress, and dry skin.

3. SYMPTOMS
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Psoriasis can be irritated, red, flaky patches of skin.
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The skin is itchy, it's dry and covered with silver, flaky skin
like scales, it's pink-red color, and it's raised and thick.

4. TYPES OF PSORIASIS
There are seven type of psoriasis:
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Plaque Psoriasis
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Guttate psoriasis
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Inverse psoriasis
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Pustular psoriasis
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Erythrodermic psoriasis
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Nail psoriasis
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Psoriatic Arthritis

5. PLAQUE/ GUTTATE/ INVERSE PSORIASIS
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Plaque psoriasis is thick, red patches of skin that are
covered by flaky, silver-white scales.
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Guttate psoriasis is a small, pink-red spots that appear on
the skin.
●
The Inverse psoriasis has skin redness and irritation occurs
in the armpits and in between overlaps skin.

6. PUSTULAR/ ERYTHRODERMIC PSORIASIS
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The Pustular psoriasis are like white blisters that are
surrounded by red, irritated skin.
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The Erythrodermic psoriasis is the skin redness that
covers a large area.

7. PROBLEM
Is Psoriasis more common in Caucasians
or African Americans?

8. HYPOTHESIS
Psoriasis is more common in Caucasians because
they mostly have dry, scaly skin that’s caused
because of season change.

9. PURPOSE
The purpose of this topic was to find out how you can
prevent psoriasis from happening to you, how you can
cure psoriasis in the future, be alert about it and get to
know where it takes us in the future. A family member
has Psoriasis and wanted to know the cause of psoriasis
and the treatment.

10. DATA AND PRESENTATION
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http://caribbean.scielo.org/scielo.php?script=sci_arttext&pid=S0043-31
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11. DATA AND PRESENTATION
EXPLANATION
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African American had more number of cases of psoriasis than
the Caucasian.
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African American had more number of cases of psoriasis
because it’s tropical and it’s near the equator.
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Psoriasis is more common in temperate than tropical climates.
●
Africa is tropical because it’s near the equator and it is
temperate too but comparing it to the East Indian ethnic, it’s
considered tropical.

12. DATA AND PRESENTATION
http://www.sciencedirect.com/science/article/pii/S0190962205047031

13. DATA AND PRESENTATION
●
African American gets more humid than the Caucasian.
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The humid makes their skin more irritant since it will be dry and if
there’s no cream used then the irritant concentration would
increase.
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African American can get sunburned which can also cause Psoriasis.
Since, they’re in the sun most of the time, they receive more
sunlight unlike the Caucasians who live in a tropical location.

14. CONCLUSION
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Psoriasis is mostly common in temperate location than tropical
location.
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By looking at the data of frequency of psoriasis by ethnic
group, African had more number of cases overall and
number of cases of psoriasis more than Caucasian.
●
The educated guess was proven wrong by looking at the data.
●
Psoriasis is not common in Caucasian because the location is
mostly dry, which causes scaly skin because of season
change.
●
By looking at the Irritant Concentration graph, African
American had a higher number of irritant than Caucasians.
African American had more dry skin than Caucasians.

15. RECOMMENDATION
Psoriasis skin get’s worser if you have dry skin so using
moisturizing lotions will help. You should take care of
your skin and scalp. You can take care of your skin by not
getting too much sun, avoiding scrapes, cuts, bumps, and
infections, avoid the dry, cold weather, don’t increase the
stress but decrease it, exercise, maintain a healthy weight.

16. BIBLIOGRAPHY
● http://www.favoriteplus.com/blog/interesting-facts-psoriasis/
● http://mrscadybiology.wetpaint.com/page/Interesting+facts+about+psoriasis
● http://www.webmd.com/skin-problems-and-
treatments/psoriasis/expck/psoriasis-types?page=2
● http://www.medicinenet.com/psoriasis/page8.htm
● http://www.webmd.com/skin-problems-and-treatments/psoriasis/prevent-
flare-ups
● http://health.nytimes.com/health/guides/disease/psoriasis/overview.html
● http://www.niams.nih.gov/health_info/Psoriasis/default.asp
● http://www.psoriasisconnect.com/learn/what-is-psoriasis.jsp
● http://www.health.com/health/gallery/0,,20483403,00.html
● http://kidshealth.org/parent/medical/allergies/psoriasis.html
● http://www.mayoclinic.org/psoriasis/
● http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001470/