Psoriasis is a chronic skin condition that is very common and incurable. Skin that has psoriasis is red and scaly or it my be bumpy. The knees and elbows are the most common areas of of the skin that are affected by psoriasis. Since psoriasis is not an infection is not contagious from one person to another.
Many researchers belive that psoriasis is an immune system disorder and that there are different things that can cause it to spread. There are several environmental factors that can cause psoriasis to flare up. Some studies show that stress can cause psoriasis to spread. Some studies show that people who worry a lot are also less likely to respond to treatments for psoriasis than people who don't worry much. People, who are prone to psoriasis, should try to avoid stress, so their psoriases doesn't get worse.
The weather is a big cause of psoriasis spreading. During warm months psoriasis tends to clear up. However,over exposure to sunlight can make psoriasis spread. Also during harsh winters psoriasis often spreads. Being in a dry climate for to long of a period of time can make psoriasis worse.
Skin Injuries can cause psoriasis to spread anywhere on the body including the injured area. Infections such as streptococcal can cause psoriasis to spread. This is the same infection that cause strep throat and tonsillitis. If someone is prone to psoriasis they need to treat rashes, from allergic reactions, immediately. Otherwise their psoriasis to spread.
Not getting enough vitamins is another cause of psoriasis spreading. Vitamin D and Vitamin A are commonly used to treat psoriasis.
Different medications can make psoriasis spread. Nonsteroidal anti-inflammatory drugs that are often used to treat arthritis are one of kinds of drugs that can make psoriasis worse. People who take these drugs for arthritis should weight the pros and cons of taking nonsteroidal anti-inflammatory drugs.