High SK misdiagnosis rate identified in Hainan, China

Seborrheic keratosis (SK) is a common, non-cancerous skin growth that usually appears as round or oval spots on the skin. In the U.S., approximately 83.8 million people are affected by SK, with a high prevalence in older adults. A study from Germany suggests it is the third most common skin condition in people over 65. This study focused on understanding the clinical and pathological characteristics of SK by reviewing patient data from a hospital in Hainan Province, China. The researchers looked at 1,169 SK cases from 2009 to 2023, examining factors like age, gender, location of lesions, and types of SK. They found that the acanthotic subtype was the most common, making up nearly 80% of cases. The study revealed that SK is most often seen on the head, face, and neck. Patients diagnosed with SK were mostly between 40 to 59 years old. The male-to-female ratio was about 1.4 to 1. Researchers noted that UV radiation exposure is a key risk factor for developing SK, and higher incidences were linked to aging populations and increased awareness of skin conditions. Misdiagnosis is a significant concern, with over 55% of clinical diagnoses being incorrect. SK was often misidentified as other skin issues like moles or skin cancers. This highlights the need for improved diagnostic techniques, including the use of non-invasive options like dermoscopy. In conclusion, the findings suggest that understanding the characteristics of SK can improve diagnosis and treatment. The study emphasizes the importance of early detection and tailored strategies for managing SK, especially in areas with high UV exposure.