It’s not surprising that many people don’t know the difference between eczema and psoriasis. It’s easy to confuse the two diseases as they are very similar in appearance. Many doctors believe both skin conditions stem from an immune disorder.
While they have some things in common, there are many differences.
With psoriasis, a person’s white blood cells attack their own skin by mistake, setting off a chain reaction causes blood vessels to dilate and attract even more white blood cells.
The result? Increased production of skin cells that travel too fast to the surface, in days rather than in weeks.
This causes dead skin and white blood cells to build up and appear as thick, scaly silvery patches on the skin's surface, according to Mayo Clinic.
As for eczema, genetic and environmental factors are believed to be involved.
Eczema makes skin red and inflamed. Patches are sometimes dark, rough, leathery and swelling. They can be crusty, oozy or scaly. They can appear on the face, inside the elbows, the back of knees and on hands and feet.
One of the worst symptoms of eczema is an intense itch which mostly happens at night. Sometimes people can scratch so hard that their skin bleeds.
For those with psoriasis, the patches may or may not be itchy. But if they do itch, the skin may feel burning or stinging. According to WebMD, some say it feels like being bitten by fire ants.
The scaly and silvery patches are often found outside the elbows and knees. It’s common for it to affect the scalp and nails as well.
An eczema breakout can be triggered by certain substances and environmental factors.
Healthgrades listed common triggers as household cleansers, detergents, soaps, chlorine, dust, pets, pollen, mold, dandruff, wool and some foods. Other culprits include sudden temperate changes and stress.
Psoriasis triggers are generally physiological. For example, some medications, stress, cold weather, smoking and alcohol can induce or worsen an episode of psoriasis, according to LiveStrong.com.
Sufferers can also experience outbreaks when their skin is injured. This happens via scratches, sunburn and vaccination.
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"Psoriasis vs Eczema: What's the Difference? How Can I Tell?" WebMD. WebMD, n.d. Web. 05 Aug. 2016.
Soung, Jane. "Psoriasis, Eczema, Dermatitis: What's the Difference?" Psoriasis, Eczema, Dermatitis: What's the Difference? N.p., 2015. Web. 05 Aug. 2016.
Psoriasis Causes. Mayoclinic.com. Web 10 Aug. 2016.