What Is Psoriasis?
Is a chronic immune-mediated inflammatory disease
in which the skin cells develop and are replaced more rapidly than normal.
This can result
in:
- Red or inflamed patches.
- Raised plaques.
- White or silvery scales.
- Dryness and cracking.
- Itching or discomfort.
It often
follows a fluctuating course, with periods of improvement and flare-ups.
Causes ?
It is
associated with a combination of genetic and immune-system factors.
Important
contributors may include:
- Genetic predisposition.
- Immune-system dysfunction.
- Environmental triggers.
- Certain infections.
- Physical skin injury.
- Stress.
- Some medications.
It is
not caused by poor hygiene and is not contagious.
Types
Plaque Psoriasis
The most common
form, characterized by raised, well-defined patches covered with scales.
Guttate Psoriasis
Often appears
as multiple small, drop-shaped lesions and may occur after certain infections,
particularly in younger people.
Inverse Psoriasis
Affects skin
folds such as the armpits, groin and under the breasts. Lesions may appear
smoother and more brightly red because of moisture and friction.
Pustular Psoriasis
A less common
form characterized by pus-filled lesions. Some forms can be serious and require
urgent medical care.
Erythrodermic Psoriasis
A rare and
potentially severe form in which a very large area of skin becomes intensely
red and inflamed. It requires urgent medical assessment.
Scalp Psoriasis
Can affect the
scalp and may extend beyond the hairline, causing scaling and irritation.
Symptoms
Symptoms vary
according to the type and severity of disease.
Common features
include:
Red Patches and Plaques
Raised,
inflamed areas may develop on the skin.
Scaling
Affected areas
often develop characteristic white or silvery scales.
Dryness and Cracking
Severe dryness
can lead to painful cracks or bleeding.
Itching
Some patients
experience significant itching or burning.
Nail Changes
It can
affect the nails, causing:
- Pitting.
- Thickening.
- Discoloration.
- Separation of the nail from the
nail bed.
Joint Symptoms
Some people develop psoriatic arthritis, which can cause joint pain,
swelling and stiffness.
What are the Triggers?
Triggers vary
between individuals and may include:
- Stress.
- Skin injury or scratching.
- Certain infections.
- Cold or dry weather.
- Smoking.
- Alcohol.
- Some medications.
- Hormonal changes.
- Stopping certain treatments
abruptly.
Identifying
individual triggers can help reduce the frequency and severity of flare-ups.
How Is It Diagnosed?
It is
usually diagnosed through a clinical skin examination and medical history.
A dermatologist
may evaluate:
- Appearance and distribution of
lesions.
- Severity of symptoms.
- Duration and pattern of
flare-ups.
- Nail changes.
- Joint symptoms.
- Family history.
- Previous treatments.
A skin biopsy
may occasionally be needed when the diagnosis is uncertain.
Treatment
Options
Treatment is
selected based on the type and severity of psoriasis.
Topical Treatments
Common topical
options include:
- Corticosteroids.
- Vitamin D analogues.
- Combination topical therapies.
- Keratolytic products.
- Topical retinoids in selected
cases.
- Other prescription
anti-inflammatory treatments.
These are
commonly used for mild to moderate disease.
Topical Treatments
Topical
medications are applied directly to affected areas.
They may help:
- Reduce inflammation.
- Slow excessive skin-cell
growth.
- Reduce scaling.
- Relieve itching.
- Improve plaque thickness.
Treatment
strength and duration should be determined by a dermatologist, particularly
when treating sensitive areas such as the face, groin or skin folds.
Phototherapy
Phototherapy, particularly narrowband UVB, may be
recommended for some patients with more widespread or persistent psoriasis.
The treatment
uses controlled ultraviolet light under medical supervision.
Phototherapy
may:
- Reduce inflammation.
- Slow excessive skin-cell
turnover.
- Improve psoriasis plaques.
- Reduce flare severity.
A course of
repeated treatments is generally required.
Systemic Treatments
For moderate to
severe psoriasis, or disease that significantly affects quality of life,
systemic medications may be considered.
Depending on
the patient, these may include oral or injectable medicines that act throughout
the body.
The choice
depends on:
- Disease severity.
- Previous treatments.
- Other medical conditions.
- Pregnancy considerations when
relevant.
- Psoriatic arthritis.
- Safety monitoring requirements.
Biologic Therapies
Biologic
medications are targeted
treatments designed to block specific pathways involved in the inflammatory
process of psoriasis.
They may be
considered for patients with moderate to severe disease who require more
advanced therapy.
Biologics can
provide significant improvement in appropriately selected patients, but they
require medical assessment, screening and ongoing monitoring.
Treatment
Scalp psoriasis
may require specialized treatment because hair can make application more
difficult.
Depending on
severity, options may include:
- Medicated shampoos.
- Topical corticosteroid
solutions, foams or lotions.
- Keratolytic treatments to
soften scales.
- Vitamin D-based topical
medicines.
- Phototherapy in selected cases.
- Systemic or biologic treatment
for more extensive disease.
Treatment
should be tailored to the scalp and hair type.
Long-Term Management
Psoriasis is
usually a chronic condition, so long-term management is important.
A personalized
plan may include:
- Regular use of prescribed treatment.
- Moisturizing the skin.
- Avoiding known triggers.
- Managing stress.
- Avoiding smoking.
- Maintaining a healthy
lifestyle.
- Monitoring for joint symptoms.
- Regular dermatology follow-up.
It is important
not to stop prescribed medication abruptly without medical advice.
Possible Complications
Poorly
controlled psoriasis can be associated with:
- Significant itching and
discomfort.
- Skin cracking and bleeding.
- Nail disease.
- Sleep disturbance.
- Psychological distress.
- Reduced quality of life.
- Psoriatic arthritis.
Patients with
new joint pain, swelling or morning stiffness should discuss these symptoms
with a medical professional because psoriasis can affect the joints as well as
the skin.
A Message to Our
Patients
Psoriasis is a
chronic inflammatory skin condition, but modern treatments can often control
symptoms effectively and significantly improve the appearance and quality of
life of patients.
Our dermatology
specialists assess the type and severity of psoriasis, the areas affected,
associated symptoms and previous treatment response before creating an
individualized treatment plan.
Depending on
the condition, treatment may include topical medications, phototherapy,
systemic treatments or biologic therapies.
Frequently Asked
Questions
Is psoriasis contagious?
No. It is not contagious and cannot be transmitted through skin-to-skin
contact.
Can psoriasis be cured permanently?
There is
currently no guaranteed permanent cure for psoriasis. However, appropriate
treatment can control the disease and may produce long periods of clear or
nearly clear skin.
What is the best treatment for psoriasis?
There is no
single treatment that is best for everyone. The choice depends on disease type,
severity, location, associated conditions and previous treatment response.
Can psoriasis be treated with creams?
Yes. Topical
treatments are an important option for mild to moderate psoriasis and may also
be used alongside other therapies.
Does sunlight help psoriasis?
Controlled
ultraviolet treatment can improve psoriasis in some patients, but intentional
or excessive sun exposure is not a substitute for medically supervised
phototherapy and can cause skin damage.
Can stress make psoriasis worse?
Yes. Stress can
trigger or worsen flare-ups in some people.
Can psoriasis affect the scalp?
Yes. Scalp
psoriasis is common and may cause scaling, itching and plaques that can extend
beyond the hairline.
Can psoriasis affect the nails?
Yes. Nail
psoriasis can cause pitting, thickening, discoloration and separation from the
nail bed.
Can psoriasis affect the joints?
Yes. Some
patients develop psoriatic arthritis, which can cause joint pain,
swelling and stiffness.
Are biologic treatments safe?
Biologics can
be effective and well tolerated in appropriately selected patients, but they
require medical evaluation, screening and ongoing monitoring.
Can psoriasis be treated during pregnancy?
Treatment
during pregnancy requires individualized medical assessment because some
medications are not appropriate during pregnancy. Patients should discuss
treatment plans with their dermatologist and obstetric team.
When should I see a dermatologist?
A dermatology
consultation is recommended for persistent, widespread, painful or recurrent
skin lesions, symptoms involving the nails or joints, or psoriasis that is not
adequately controlled with regular skincare or previously prescribed treatment.