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The cause of psoriasis starts
with the immune system. T cells, a type of white blood cell,
usually protect the body against infection and disease by attacking
bacteria and viruses. However, when you have psoriasis, your
T cells mistakenly attack your skin cells instead. Your body
then produces other immune system responses, leading to swelling
and rapid production of skin cells. Psoriasis tends to run in
families and it usually appears between the ages of 10 and 45.
Psoriasis is an inherited disease.
However there are certain triggering factors such as injury to
the skin, vaccinations and certain medications that have been
responsible for the development of this condition. It usually
takes about a month for new cells to move from the lower layers
of the skin to the surface. In psoriasis, this process takes
only a few days, resulting in a build up of dead skin cells and
formation of thick scales.
Psoriasis occurs more likely
in dry skin than oily or well-moisturized skin. Excessive alcohol
consumption, obesity, lack of or overexposure to sunlight, stress,
cold climate, physical illness, streptococcal or HIV infection,
superficial wounds, or taking certain drugs such as lithium,
beta-blockers such as propranolol, anti-malarial medications
and in general poor health results in flaring up of psoriasis.
The symptoms of psoriasis can
manifest in a variety of forms. Different types of psoriasis
exhibit different characteristics that may change over time.
One form may change to another, or several forms may exist at
the same time.
- Plaque psoriasis: This is the most common type of psoriasis.
It is characterized by raised, red lesions covered with silvery
white scales. The scales are caused by a building up of dead
skin cells. It may appear on the knees, elbows, scalp, trunk
or any other skin surface.
- Guttate psoriasis: It is characterised by numerous small
red dots of psoriasis. The lesions may have some scaling. These
numerous spots of psoriasis appear over large areas of the body,
such as the trunk, limbs, and scalp. It may appear suddenly following
a bacterial or viral infection or the administration of drugs
like ketoconazole and salicylic acid.
- Inverse psoriasis: This is usually found in the folds
of the skin in the armpits, groin, under an overweight stomach
or under the breasts. It appears as smooth, red lesions without
scaling and may cause irritation due to rubbing and sweating.
- Pustular psoriasis: It is characterized by blisters filled
with pus on the skin. The blisters are not infectious. It may
be found on the hands and feet or may be spread all over. The
skin under and surrounding pustules is red and tender.
- Psoriatic arthritis: About 10% of the patients with psoriasis
may develop a form of arthritis called psoriatic arthritis. This
may cause redness and swelling, primarily on the hands, feet,
knees, hips, elbows and spine. It may cause stiffness, pain and
joint damage.
- 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
and crumbling of the nail.
- 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.
Diagnosis of psoriasis is usually
based on the appearance of the skin. There are no special blood
tests or diagnostic procedures for psoriasis. Sometimes a skin
biopsy, or scraping, may be needed to rule out other disorders
and to confirm the diagnosis.
As per Ayurveda, Psoriasis is
caused by vitiation of vata and kapha dosha. The vitiated doshas
affect the skin and blood tissues. They also influence water
element of the affected region on skin. Thus the skin which is
influenced by affected doshas becomes discolored (white or copper
colored), scaly and thin.
CHARAKA offers a very effective treatment methodology
based on the classical texts of Ayurveda. The treatment comprises
of Detoxification through Panchakarma therapies, administration
of internal medication and external applications, which not only
helps in curing Psoriasis but also in preventing relapse. |