Best answer: Which body area is most commonly affected by psoriasis?

What part of the skin is affected by psoriasis?

While any part of your body can be affected, psoriasis plaques most often develop on the elbows, knees, scalp, back, face, palms, and feet. Like other autoinflammatory diseases, psoriasis occurs when your immune system — which normally attacks infectious germs — begins to attack healthy cells instead.

How is the epidermis affected by psoriasis?

In skin affected by psoriasis, immune cells enter the skin through blood vessels and cause the epidermis to grow very rapidly and to stop shedding properly (figure 2). This causes thickening of the skin as well as the scaly build-up composed of dead skin cells that is seen on areas affected by psoriasis.

Where does psoriasis usually start?

It starts with one large patch, usually on the trunk. After around 2 weeks, more patches develop, usually on the trunk, arms or legs. The pattern may look like a fir tree. The skin feels scaly.

What is the root cause of psoriasis?

Psoriasis occurs when skin cells are replaced more quickly than usual. It’s not known exactly why this happens, but research suggests it’s caused by a problem with the immune system. Your body produces new skin cells in the deepest layer of skin.

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Can psoriasis cause hair loss?

Scalp psoriasis itself doesn’t cause hair loss, but scratching a lot or very hard, picking at the scaly spots, harsh treatments, and the stress that goes along with the condition can lead to temporary hair loss. Fortunately, your hair usually grows back after your skin clears.

Is psoriasis age related?

Most people develop psoriasis between the ages of 15 and 35. While psoriasis may get better or worse depending on different environmental factors, it doesn’t get worse with age. Obesity and stress are two possible components that lead to psoriasis flares.

Does psoriasis always spread?

Share on Pinterest Psoriasis does not spread between different people, but may spread to different areas on the body. People who have never seen psoriasis before may assume that it is infectious. However, psoriasis is not a contagious disease, and the scaly patches it causes will not spread to another person.

Is psoriasis a fungus?

Psoriasis is an autoimmune disease that causes plaques and lesions on the skin. When symptoms develop on toenails and fingernails, they can resemble nail fungus. However, fungal infections are contagious, and psoriasis is not.

What layer of the cutaneous membrane is affected by psoriasis?

The hyper-proliferative basal layer forms finger like projections known as papillae into the dermis. Overall, the epidermis also demonstrates hyperkeratosis and parakeratosis, and blood vessels in the dermis of a psoriatic lesion are increased in number, lumen diameter and tortuosity.