Psoriasis: What it is, Types, Symptoms, Causes and Treatment


End the mysteries and taboos that surround this disease and discover its symptoms, causes and treatment

Psoriasis is a chronic and inflammatory disease that affects many people. There are many prejudices about this dermatological ailment that have not yet been broken. Learn more about her and discover her nuances.

What is Psoriasis?

According to the Brazilian Society of Dermatology , psoriasis is a relatively common, chronic and non-contagious disease; Some 5 million Brazilians suffer (data published by the NGO Psoriasis Brasil). Still agree, 77% of patients have suffered some kind of prejudice and 43% changed their habits to avoid shame situations.

Unfortunately, it is a disease with unknown cause, but that is directly related to the immune system and the interaction with the environment. In addition, it has the related genetic factor. It is believed that the disease develops and manifests when only T lymphocytes (body defense) release inflammatory substances in the body.

Consequently, the defense of the organism is stimulated and the skin cells are attacked. In response, a large production of “scales” arises because the process is continuous. The body fails to eliminate dead skin and the wearer has thick, scaly patches on the skin.

Types of Psoriasis

Psoriasis is not characterized by punishing only type. In fact, this disease has several different ways of manifesting. This distinction causes several types of this dermal problem. Check, then, what are these types:

1. Guttate

The injuries caused by guttatas are not as thick as plaque lesions, but they also cause a lot of itching. This type of psoriasis is more common among people under 30. This type is triggered by bacterial infections and can cause gout-like wounds in the trunk, arms, legs and scalp.

2. In plates or vulgar

This is the most common type of psoriasis and consists of the formation of reddish plaques with scales (silver or whitish). These can occur anywhere in the body (including genital regions). Itching, it can hurt and, in more severe cases, even crack and bleed.

3. Pustular

This type of psoriasis can cause spots, blisters or pustules, which are small blisters with pus. It can cause fever, chills, fatigue and itching. Pus is not infectious and can dry in two days (and reappear for days or weeks). It usually appears on the hands, fingers and feet.

4. Inverted

In this case, the red (and inflamed) spots characteristic of psoriasis appear in the most unique parts of the body such as the armpits, the English, under and around the genitals. In obese people, this condition may manifest more severely due to excessive sweating and friction in certain regions of the body (folds).

5. Arthropathy

Also known as psoriatic arthritis, it can cause severe joint pain, in addition to peeling skin. The most affected joints in this case are those of the hands, feet and fingers, as well as the spine and hip.

This picture can generate, over the years, a certain stiffness and even permanent deformations.

6. Erythrodermal

It is the rarest type of disease manifestation and can be manifested by severe burns, inappropriate treatment, infections or other poorly controlled psoriasis. It can manifest itself throughout the body, with red spots that can itch and itch intensely.

7. On the scalp

Commonly confused with intense dandruff, this type of psoriasis causes scaling of the scalp. They are thick silver-white scales, and can be noticed after scratching the region.

8. Nail psoriasis

The areas affected by this type of psoriasis are the nails of the hands and feet, which in turn grow abnormally, thicken and scale. Many times they change color and detach from the nail bed (finger).

Is Psoriasis contagious?

There is a certain taboo and prejudice regarding this disease as it manifests with reddish spots and scaly regions on the skin. However, psoriasis is not contagious in any of its forms and types of manifestation.


Psoriasis is characterized by peeling of the skin, may have some different symptoms depending on the type and from patient to patient. The most common psoriasis symptoms are:

  • Red and scaly spots
  • Whitish (or dark) spots after an injury
  • Dry, cracked and bleeding skin
  • Itching, burning and pain in the scaly or reddish place
  • In specific cases, thick and dislocated nails/swelling and joint stiffness


Although psoriasis is a chronic disease, it may not manifest itself in some people’s bodies. However, some factors may increase the likelihood of clinical manifestation or of acquiring it:

  • Genetics: 30-40% have a family history (according to the Brazilian Dermatology Society)
  • Stress and low immunological levels
  • Obesity
  • HIV positive people
  • People who smoke and drink
  • Cold temperatures (dry skin


Remember that psoriasis has no cure, but it can be controlled. Each type and severity of the case may receive different forms or combined treatments to relieve symptoms and discomfort. The options may vary from skin hydration, topical medications (ointments), daily sun exposure, artificial exposure to ultraviolet A or B light.

Topics: cream or ointment medications

Systemic: medication in tablets or injections

Biological: biological injections with anti-TNF agents; anti-interleukin 12 and 23 and 17

Phototherapy: exposure to ultraviolet light.

These should be done in accompaniment with the doctor so that he can determine the severity of the case and the ideal simple or combined treatment required by each patient.

When and what doctor to consult?

Psoriasis is a disease that affects the skin (dermis) and can have an impact on the quality of life of those who suffer from it. Therefore, when you notice some of these signs, visit a professional so you can indicate and guide the appropriate treatments to minimize, or even control the symptoms.

Maintaining a balanced diet and physical activity helps promote the immune system, thus preventing the disease from manifesting or even getting worse.

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