Diagnosis and classification of psoriasis

Area of Science:

• Dermatology
• Immunology
• Rheumatology

Background:

• Psoriasis is a chronic, multi-organ inflammatory disease affecting skin and joints.
• Despite characteristic features, established diagnostic criteria and unified classification for psoriasis are lacking.
• Previous classification attempts focused on age of onset, severity, and morphology.

Purpose of the Study:

• To review the diagnostic challenges and classification approaches for cutaneous psoriasis.
• To highlight the primary reliance on clinical pattern recognition for psoriasis diagnosis.

Main Methods:

• Review of existing literature on psoriasis classification and diagnosis.
• Morphological evaluation of skin lesions and joint involvement.

Main Results:

• Morphological evaluation has identified key psoriasis subtypes: plaque, guttate, pustular, and erythrodermic.
• Histopathology and blood tests are generally not primary diagnostic tools for psoriasis.
• Diagnosis predominantly depends on pattern recognition of clinical manifestations.

Conclusions:

• The diagnosis of psoriasis primarily relies on clinical pattern recognition of skin and joint lesions.
• Further research may be needed to establish unified diagnostic criteria and classification systems.