Psoriasis is a common skin disease characterized by thickened patches of inflamed, red skin covered with thick, silvery scales. The elbows and knees are the most common areas affected by psoriasis. It will often appear in the same place on both sides of the body. The patches can range in size from smaller than a dime to larger than a hand.Description of Psoriasis Normally, skin cells mature and shed after about a month. In psoriasis, the cell maturation speeds up, taking only three to four days. Because the lower layer of skin cells divides more rapidl than normal, dead cells accumulate in thicker patches on the skin’s outermost layer (called the epidermis).
What are the psoriasis causes?
The underlying psoriasis cause is unknown. However, it can be genetically inherited or passed from generation to generation. Most researchers agree that the immune system is somehow mistakenly triggered, which speeds up the growth of skin cells. A normal skin cell matures and falls off the body’s surface in 28 to 30 days. But a psoriatic skin cell takes only three to four days to mature and move to the surface. Instead of falling off (shedding), the cells pile up and form the lesions. Possible triggers include: Stress, injury, illness, infection, steroids, and reaction to medications. Psoriasis is not an infection and it is not contagious. Can psoriasis affect all parts of the body?
Psoriasis most commonly appears on the scalp, knees, elbows and torso. But psoriasis can develop anywhere, including the nails, palms, sol. What is vitiligo?
Vitiligo is a relatively common skin disorder, in which white spots or patches appear on the skin. These spots are caused by destruction or weakening of the pigment cells in those areas, resulting in the pigment being destroyed or no longer produced. Many doctors and researchers believe that vitiligo is an autoimmune-related disorder. Although researchers are not exactly sure what causes the autoimmune response, more is being learned every year. In vitiligo, onlythe color of the skin is affected. The texture and other skin qualities remain normal. What does vitiligo look like?
Vitiligo appears as uneven white patches on the skin, that may vary from lighter tan to complete absence of pigment. Many people develop vitiligo bilaterally, in other words, if it appears onone elbow, it often appears on the other elbow. Others develop what is known as segmental vitiligo, where the patches develop in only one area or on only one side of the body. What is Melanin?
Melanin is a dark brown pigment of skin and hair in animals, particularly vertebrates, derived from the amino acid tyrosine. It is synthesized by special cells called Melanocytes, which also store the melanin. What are the symptoms of vitiligo?
People who develop vitiligo usually first notice white patches or spots (depigmentation) on their skin. The skin remains of normal texture, though some people experience itching in areas where depigmentation is occurring. The white patches are more obvious in sun-exposed areas, including the hands, feet, arms, legs.