Archive for the ‘Psoriasis’ Category

Types of psoriasis

Friday, March 27th, 2015

The symptoms of psoriasis can manifest in a variety of forms. Variants include plaque, pustular, guttate and flexural psoriasis.

Plaque psoriasis (psoriasis vulgaris)

Plaque psoriasis is the most common form of psoriasis. It affects 80 to 90% of people with psoriasis. Plaque psoriasis typically appears as raised areas of inflamed skin covered with silvery white scaly skin. These areas are called plaques.

Flexural psoriasis (inverse psoriasis)

Flexural psoriasis appears as smooth inflamed patches of skin. It occurs in skin folds, particularly around the genitals (between the thigh and groin), the armpits, under an overweight stomach (pannus), and under the breasts (inframammary fold). It is aggravated by friction and sweat, and is vulnerable to fungal infections.

Guttate psoriasis

Guttate psoriasis is characterized by numerous small round spots (differential diagnosis-pityriasis rosea-oval shape lesion). These numerous spots of psoriasis appear over large areas of the body, such as the trunk, limbs, and scalp. Guttate psoriasis is associated with streptococcal throat infection.

Pustular psoriasis

Pustular psoriasis appears as raised bumps that are filled with non-infectious pus (pustules). The skin under and surrounding the pustules is red and tender. Pustular psoriasis can be localised, commonly to the hands and feet (palmoplantar pustulosis), or generalised with widespread patches occurring randomly on any part of the body.

Psoriasis of a fingernail

Nail psoriasis produces a variety of changes in the appearance of finger and toe nails. These changes include discolouring under the nail plate, pitting of the nails, lines going across the nails, thickening of the skin under the nail, and the loosening (onycholysis) and crumbling of the nail.

Psoriatic arthritis

Psoriatic arthritis involves joint and connective tissue inflammation. Psoriatic arthritis can affect any joint but is most common in the joints of the fingers and toes. This can result in a sausage-shaped swelling of the fingers and toes known as dactylitis. Psoriatic arthritis can also affect the hips, knees and spine (spondylitis). About 10-15% of people who have psoriasis also have psoriatic arthritis.

Erythrodermic psoriasis

Erythrodermic psoriasis involves the widespread inflammation and exfoliation of the skin over most of the body surface. It may be accompanied by severe itching, swelling and pain. It is often the result of an exacerbation of unstable plaque psoriasis, particularly following the abrupt withdrawal of systemic treatment. This form of psoriasis can be fatal, as the extreme inflammation and exfoliation disrupt the body’s ability to regulate temperature and for the skin to perform barrier functions.

Psoriasis.

Wednesday, March 25th, 2015

Psoriasis is quite common, affecting around two per cent of the population, although people with very mild symptoms may not be aware they have it. Psoriasis can begin at any age but usually starts either around the age of 20 or between 50 and 60.

The disorder is a chronic recurring condition which varies in severity from minor localized patches to complete body coverage. Fingernails and toenails are frequently affected (psoriatic nail dystrophy) and can be seen as an isolated finding. Psoriasis can also cause inflammation of the joints, which is known as psoriatic arthritis. In contrast to eczema, psoriasis is more likely to be found on the extensor aspect of the joint.

 Causes for Psoriasis

Following factors can trigger psoriasis.

  • Heredity – If one parent is affected then there is 15% of chances for the child to suffer from psoriasis. If both the parents are affected then the possibility of child getting the psoriasis is 60%.
  • Throat infections trigger psoriasis.
  • Trauma or hurt on skin like cuts, bruises or burns may cause psoriasis.
  • Some medicines or skin irritants initiate psoriasis.
  • Smoking and alcohol are other two factors which activate psoriasis.
  • Mental stress or psychological trauma may also set off psoriasis.
  • Due to abnormality in the mechanism in which the skin grows and replaces itself causes psoriasis.
  • Abnormality with the metabolism of amino acids.
  • Use of certain medicines.
  • Due to infections.
  • Heredity factors are also responsible.
  • Physical and emotional stress.
  • Diet- common in non-vegetarians.
  • Weather- exacerbations in winters & remissions in summers.
  • Hormonal- worse at or after menopause & remission during pregnancy.