Hurricane Season: The portion of the year having a relatively high incidence of hurricanes. The hurricane season in the Atlantic, Caribbean, and Gulf of Mexico runs from June 1 to November 30.
1 Psoriasis is not contagious. 2  Psoriasis is a condition of the immune system. 3  The severity of psoriasis is based on how it affects you and how much of your body is covered. 4  About 1 in 5 people with psoriasis have moderate to severe plaque psoriasis.soriasis is a lifelong condition of the immune system. The exact cause is unknown; however, researchers think that family history, environment, and the immune system can all play a role in psoriasis.
Certain factors may trigger psoriasis in a person who has never had symptoms before. And for those who have psoriasis, these same factors can trigger another bout with the disease. Triggers include: 1  bacterial or viral infections, such as strep throat or the common cold. 2  diseases that weaken your immune system, such as AIDS or cancer. 3  emotional stress. 4  dry air or dry skin (particularly from changes in weather). 5  some medicines, such as beta-blockers, lithium, and anti-malaria drugs.