Who gets psoriasis?
Psoriasis occurs in both children and adults and may appear at any age, although it is most commonly diagnosed between the ages

What causes psoriasis?
The exact cause of psoriasis is unknown; however, researchers suspect that whether a person develops psoriasis or not may depend on a "trigger." Possible psoriasis triggers include emotional stress, skin injury, systemic infections, and certain medications. Studies have also indicated that a person is born genetically predisposed to psoriasis, and multiple genes have been discovered over the past 5 years confirming this fact. Even so, not everyone with psoriasis will have a family history of the disease.
 
Is it possible to have psoriasis and eczema at the same time?
The biology of skin limits the number of ways in which it can manifest a disease process-by redness, flaking, swelling, etc. Thus, many skin conditions can superficially resemble one another and a dermatologic examination is necessary to establish a diagnosis. Self-diagnosis of a troublesome skin condition can delay proper treatment.
Psoriasis and eczema are two skin problems that seem to be mutually exclusive to a degree, although this is not a hard and fast rule. In persons with psoriasis the incidence of allergic contact dermatitis and atopic dermatitis-two major forms of eczema-appears to be substantially lower than in the general population. A suggested reason is that the immune system dysregulation believed to be a factor in psoriasis is not the same as dysregulation of immune pathways in these forms of eczema.

What does eczema look and feel like?
Although eczema may look different from person to person, it is most often characterized by dry, red, extremely itchy patches on the skin. Eczema is sometimes referred to as "the itch that rashes," since the itch, when scratched, results in the appearance of the rash.
Eczema can occur on just about any part of the body; however, in infants, eczema typically occurs on the forehead, cheeks, forearms, legs, scalp, and neck. In children and adults, eczema typically occurs on the face, neck, and the insides of the elbows, knees, and ankles. In some people, eczema may "bubble up" and ooze. In others, the condition may appear more scaly, dry, and red. Chronic scratching causes the skin to take on a leathery texture because the skin thickens (lichenification).

Who gets eczema?
Eczema occurs in both children and adults, but usually appears during infancy. Although there is no known cause for the disease, it often affects people with a family history of allergies.
Those who are genetically predisposed and then exposed to environmental triggers may develop eczema. Many people who have eczema also suffer from allergic rhinitis and asthma, or have family members who do.

Psoriasis is a chronic non-infectious condition that affects mainly the skin It commonly causes red, scaly patches to appear on the skin, although some patients have no dermatological symptoms. The scaly patches caused by psoriasis, called psoriatic plaques, are areas of inflammation and excessive skin production. Skin rapidly accumulates at these sites and takes on a silvery-white appearance. Plaques frequently occur on the skin of the elbows and knees, but can affect any area including the scalp, palms of hands and soles of feet, and genitals. In contrast to eczema, psoriasis is more likely to be found on the extensor aspect of the joint.

Eczema is a condition in a form of dermatitis or inflammation of the epidermis The term eczema is broadly applied to a range of persistent skin conditions. These include dryness and recurring skin rashes that are characterized by one or more of these symptoms: redness, itching and dryness, crusting, flaking, blistering, cracking, oozing, or bleeding.
Light therapy or deep penetrating light therapy using ultravoilet light helps control eczema. UVA is mostly used, but UVB and Narrow Band UVB are also used