Psoriasis is a chronic skin disease that develops due to an overactive immune response. It is not infectious. The disease has a relapsing course, with alternating periods of flare-ups and remission.
Modern medicine does not yet have methods to cure this disease completely. However, a dermatologist can prescribe treatment that can significantly improve quality of life.
How does psoriasis develop?
Psoriasis cannot be contracted from another person. It is triggered by a combination of internal and external factors—genetic predisposition and exposure to triggers (infections, skin injuries, harmful habits, starting or stopping certain medications). The disease develops when, in a person with a genetic predisposition, triggers set off a chain of immune reactions. As a result, new skin cells form faster than they should, inflammation develops, plaques form, and scaling begins.
In many patients, the disease is more severe in winter because the skin receives very little sunlight (and psoriasis “fears” ultraviolet rays).
The prevalence of the disease among men and women is approximately the same.
How does psoriasis manifest?
- The skin becomes covered with well-defined red plaques with silvery-white scales.
- The scales are excessively dry and prone to flaking, sometimes with cracking.
- They often itch and may be painful or cause a burning sensation.
Which areas of the skin are affected by psoriasis depends on the form of the disease:
- In plaque psoriasis, the elbows, knees, lower back, and scalp are affected; dense scaly plaques appear on the skin (this is the most common form).
- In guttate psoriasis, the skin of the trunk, arms, and legs is affected, with small “drop-like” spots (this form often develops after infectious throat diseases).
- Inverse psoriasis appears in skin folds—under the armpits, in the groin area, under the breasts—and looks like smooth red patches with little to no scaling.
- Nail psoriasis causes thickening and separation (lifting) of the nail plates on the fingers and toes.
Sometimes rare severe forms of the disease develop, affecting large areas of the body and requiring immediate dermatological care. For example, erythrodermic psoriasis can affect up to 90% of the skin surface, cause skin peeling, and disrupt the body’s protective function and thermoregulation. Another is generalized pustular psoriasis, in which the skin becomes covered with numerous pustules.
Psoriasis symptoms worsen due to triggers such as stress, infectious and parasitic diseases, skin injuries, and the use of certain medications. Flare-ups also occur more often with an unhealthy diet—consumption of sweets, processed foods, spicy and smoked dishes, and alcohol.
When should you see a dermatologist?
If suspicious skin lesions appear (rash, blisters, scales, redness), you should definitely schedule a consultation with a dermatologist.
Seek an urgent consultation if you notice at least one of the following:
- The skin suddenly becomes red and starts peeling over almost the entire body.
- The affected area is rapidly increasing, and fever develops.
- Sensations similar to burns appear, accompanied by general weakness, chills, and a rapid pulse (these may be signs of erythrodermic psoriasis, a life-threatening form of the disease).
- The skin is painful and becomes covered with pustules, your overall condition worsens, and fever begins (symptoms of generalized pustular psoriasis).
If you already have a history of psoriasis, you should see a doctor as soon as possible (within the next 24–48 hours) if:
- There are signs of infectious inflammation of skin cracks or areas damaged by scratching.
- Pain and swelling increase, body temperature rises, and your overall condition worsens.
- Symptoms of joint involvement appear or worsen — joints hurt and swell (“sausage-like” swelling of the fingers).
- You experience morning stiffness: these may be symptoms of psoriatic arthritis.
- Your eyes become red and painful, you develop light sensitivity, and vision worsens — these are signs of uveitis (inflammation of the uveal tract of the eye).
Psoriasis diagnosis: how does a dermatologist examine you?
To establish a diagnosis, an examination of the affected skin areas is often sufficient. If the clinical picture is atypical or other conditions are suspected, the following may be performed for an accurate diagnosis:
- Assessment of the extent of pathological changes — the dermatologist determines the affected area, the severity of inflammation, and how the disease impacts sleep, well-being, and work capacity.
- Examination of the scalp and nails — sometimes these findings help confirm the diagnosis.
- Skin scraping and testing for fungal or bacterial infections — if the rash has signs of an infectious disease.
- Biopsy (taking a skin sample for laboratory analysis) — performed in selected cases when the diagnosis needs confirmation.
- Screening for comorbid conditions — your complaints are reviewed (including joint pain), and risk factors that often accompany psoriasis are assessed.
Psoriasis is not only about the skin
Inflammation of the joints may develop in the setting of psoriasis — psoriatic arthritis — which can sometimes remain undiagnosed. That is why you should inform your dermatologist about any joint problems.
Psoriasis can strongly affect mental and emotional well-being. Patients may feel ashamed and can struggle with social isolation, increased anxiety, and depression. This is part of the disease burden and deserves as much attention as physical discomfort.
When diagnosing psoriasis, it is important not to confuse it with other dermatoses that have similar manifestations but require completely different treatment. These include:
- eczema
- fungal skin infections
- seborrheic dermatitis
- pityriasis rosea, lichen planus, and other rare conditions.
Treatment of psoriasis
Can “folk remedies” help with psoriasis? This is a very risky path, because the effectiveness of herbal decoctions, dietary supplements, and strict diets has not been scientifically proven (and is often not evaluated by specialists at all). Moreover, home procedures (for example, cauterization) can cause irritation and burns, which make skin rashes worse.
Psoriasis requires modern, evidence-based dermatology approaches.
What can a doctor prescribe?
Topical treatments:
- Hormonal ointments and creams (topical corticosteroids) — strictly according to the regimen prescribed by a dermatologist.
- Calcineurin inhibitors—non-hormonal medications for sensitive areas.
- Vitamin D analogues.
- Keratolytics — to soften scales.
- Emollients to moisturize the skin.
- Courses of controlled UVB phototherapy (do not confuse it with tanning beds)—may help patients with widespread lesions and when topical therapy is not effective enough.
- In moderate-to-severe psoriasis that significantly reduces quality of life, systemic medications may be prescribed: methotrexate, acitretin, cyclosporine, and apremilast.
Treatment is selected individually and carried out under close specialist supervision.
How to make treatment more effective
- Use skin moisturizers 1–2 times a day.
- Do not use scrubs or skincare products that contain alcohol.
- Avoid very hot showers.
- Limit alcohol consumption and stop smoking.
- Treat infectious diseases promptly by seeing a doctor.
- Take care of your psychological well-being.
Frequently asked questions for a dermatologist
Is psoriasis contagious?
Psoriasis is not related to an infection. Even with close contact or when using shared household items, you cannot catch it.
Can psoriasis be cured permanently?
It cannot be cured completely. However, by seeing an experienced dermatologist, you can achieve long-lasting remission and live without noticeable symptoms for a long time.
Why do flare-ups occur?
Psoriasis flare-ups are often triggered by infections, stress, skin injuries, smoking, alcohol use, and certain medications; in some cases, seasonality also plays a role.
Does sunlight help?
Reasonable exposure to natural sunlight may ease symptoms, while sunburn can lead to new plaques.
Do I need a “special diet” for psoriasis?
There is no universal diet for psoriasis. To improve your condition, follow healthy eating principles, avoid excessive alcohol, and limit smoking.
Are hormonal ointments dangerous?
Self-treatment with hormonal products and uncontrolled use can be dangerous. But when they are prescribed by a doctor and the patient follows the regimen, these medications can be effective for psoriasis.
Can psoriasis affect the joints?
Some patients develop psoriatic arthritis. If your joints start to hurt and swell, or you feel morning stiffness, seek evaluation urgently.
Can I take hormonal pills/injections “to quickly clear the rash”?
Any use of hormonal medications must be supervised by a doctor—do not take these medicines on your own. Stopping them abruptly can worsen the condition of the skin. Consult a dermatologist, who can recommend a safe and fast way to control the rash.
What is important to remember?
Psoriasis is a disease that cannot be cured, but it can be controlled.
With modern protocols, a dermatologist can select a treatment plan tailored to you, helping you achieve remission.
Do not be afraid of diagnosis and treatment: with modern methods, it is possible to reduce symptoms, protect skin health, and improve your quality of life.
Trust in your doctor matters—seek help if the rash keeps coming back and interferes with your life.
