1. Types of Psoriasis
Plaque Psoriasis
The most common form, characterized by red, raised patches of skin covered with silvery scales. These lesions often develop on the scalp, knees, and elbows.
Guttate Psoriasis
Presents as small, pink, drop-shaped spots, often appearing on the trunk, arms, and legs. The patches are typically thinner than those of plaque psoriasis.
Pustular Psoriasis
Occurs predominantly in adults and causes red, inflamed skin accompanied by pus-filled blisters. It can affect specific areas like the hands and feet or spread across the body.
Inverse Psoriasis
This type develops in moist skin folds, such as under the breasts, around the groin, or in the armpits. It manifests as smooth, shiny, red patches of irritated skin.
Erythrodermic Psoriasis
A rare and severe form resembling a widespread sunburn. It causes extensive peeling, severe redness, fever, and illness. This condition is a medical emergency and requires immediate attention.
2. Is Psoriasis Contagious?
Psoriasis is not contagious and cannot be spread through physical contact.

3. Causes of Psoriasis
Immune System Dysregulation
Psoriasis is caused by an overactive immune response, where T-cells mistakenly attack healthy skin cells. This leads to an accelerated production of new skin cells, causing buildup and inflammation.
Genetic Factors
Psoriasis often runs in families, with about 2–3% of cases linked to hereditary predisposition.
4. Common Triggers for Psoriasis
Alcohol Consumption
Excessive drinking can exacerbate symptoms.
Certain Medications
Drugs like lithium, antimalarials, and some blood pressure medications may trigger flare-ups.
Infections
Illnesses such as strep throat can activate the immune system, leading to psoriasis outbreaks.
5. Diagnosing Psoriasis
Physical Examination
A dermatologist examines affected areas and reviews family and medical history.
Biopsy
In unclear cases, a small skin sample may be analyzed to confirm the diagnosis.
6. Psoriasis Treatment Options
Although psoriasis cannot be cured, effective treatments can reduce symptoms and improve quality of life.