Throughout his career, cardiologist Dr. Rajan Bhatt has published several peer-reviewed research papers investigating echocardiography and gastroenterology. In addition to his contributions to the medical field, Dr. Rajan Bhatt also serves as CEO of Spectrum Dermatology, a specialty clinic based in Scottsdale, Arizona. The clinic treats multiple dermatological conditions, including skin lesions. Many people develop large brown lesions on their skin as they age. In medical terms, these benign spots are known as seborrheic keratoses. They usually appear in clusters on the back, abdomen, or scalp and have a waxy texture. While they may resemble moles, they do not have the same ability to become cancerous. However, they can grow and darken over time. For this reason, it can be difficult to distinguish between melanoma, a skin cancer, and seborrheic keratosis by sight alone. In this case, patients can request a biopsy from their dermatologist. The causes of seborrheic keratosis are not well understood, but they are hereditary. Pregnant women or people undergoing hormone therapy also have a higher chance of developing seborrheic keratosis. Patients may want these spots removed for cosmetic reasons. Doctors may also recommend removal if the spot becomes irritated and sensitive.