Guttate psoriasis

A type of psoriasis characterized by small, drop-shaped lesions

Guttate psoriasis is a type of psoriasis that presents with small, drop-shaped, scaly patches on the skin. It is one of the several clinical forms of psoriasis, a chronic inflammatory skin condition.

Presentation

Guttate psoriasis is characterized by the sudden appearance of small, red, scaly spots on the skin. These lesions are typically less than 1 cm in diameter and are often described as "drop-like" or "tear-drop" shaped. The lesions are usually distributed over the trunk and proximal extremities, but they can also appear on the face, scalp, and ears.

Causes

The exact cause of guttate psoriasis is not fully understood, but it is believed to be an immune-mediated condition. It is often triggered by a streptococcal infection, such as strep throat. Other potential triggers include stress, skin injuries, and certain medications. Genetic factors also play a role, as psoriasis tends to run in families.

Pathophysiology

Guttate psoriasis involves an abnormal immune response that leads to rapid skin cell turnover. This results in the accumulation of skin cells on the surface, forming the characteristic scaly patches. The immune system mistakenly attacks healthy skin cells, causing inflammation and the rapid production of new skin cells.

Diagnosis

Diagnosis of guttate psoriasis is primarily clinical, based on the appearance of the skin lesions. A dermatologist may perform a skin biopsy to confirm the diagnosis and rule out other conditions. A throat culture or blood test may be conducted to check for a recent streptococcal infection.

Treatment

Treatment for guttate psoriasis aims to control symptoms and prevent flare-ups. Options include:

• Topical treatments: Corticosteroids, vitamin D analogs, and coal tar preparations can help reduce inflammation and scaling.
• Phototherapy: Exposure to ultraviolet light can slow the rapid growth of skin cells.
• Systemic treatments: In severe cases, oral or injectable medications that suppress the immune system may be used.
• Antibiotics: If a streptococcal infection is present, antibiotics may be prescribed.

Prognosis

Guttate psoriasis often resolves on its own within a few weeks to months, especially if it is triggered by an infection. However, some individuals may experience recurrent episodes or develop chronic plaque psoriasis.

Prevention

Preventive measures include managing stress, avoiding skin injuries, and treating infections promptly. Maintaining a healthy lifestyle and following a skincare routine can also help reduce the risk of flare-ups.

Related pages

• Psoriasis
• Plaque psoriasis
• Pustular psoriasis
• Erythrodermic psoriasis
• Psoriatic arthritis