Why Are Some Moles Red? Causes and When to Be Concerned

It is common for individuals to observe various spots and marks on their skin, and among these, some moles may appear distinctly red. This reddish discoloration can often spark curiosity about their origin and nature. While many such skin markings are harmless, understanding their characteristics can help distinguish between typical occurrences and those that might warrant closer attention.

Understanding Red Moles

Red moles, often referred to as cherry angiomas or spider angiomas, are common benign skin growths that consist of small blood vessels. Cherry angiomas typically present as small, bright red, dome-shaped or flat spots on the skin. They can range in size from a pinpoint to several millimeters in diameter and are frequently found on the trunk, arms, and shoulders. These growths are vascular, formed from an overgrowth of tiny blood vessels.

Spider angiomas, conversely, appear as a central red spot with tiny blood vessels radiating outwards, resembling a spider’s web. They blanch when pressure is applied to the central spot, as the blood is temporarily pushed out of the vessels. These are most commonly observed on the face, neck, upper chest, and arms. Both cherry and spider angiomas are generally considered harmless and do not pose a health risk.

Factors Contributing to Red Moles

The development of red moles is often influenced by natural physiological processes and external factors. Cherry angiomas are associated with aging, typically appearing in individuals over 30 years old, with their prevalence increasing with age. Genetic predisposition also plays a role, as these growths can run in families, suggesting an inherited tendency to develop them.

Spider angiomas are frequently linked to hormonal fluctuations within the body. They commonly appear during pregnancy due to elevated estrogen levels, and can also be associated with the use of oral contraceptives. Sun exposure may also contribute to their formation, particularly on areas of the skin that are often exposed to ultraviolet radiation. These factors highlight that the appearance of these red moles is often a normal part of the body’s response to internal changes or environmental interactions.

Recognizing Concerning Red Moles

While most red moles are benign, it is important to be aware of certain warning signs that could indicate a more serious underlying condition. Any changes in an existing mole, regardless of its initial color, warrant medical evaluation. This includes changes in size, shape, or color, especially if a red mole darkens, becomes unevenly colored, or develops multiple shades. The “ABCDE” rule, which stands for Asymmetry, Border irregularity, Color variation, Diameter (larger than 6mm), and Evolving (changing) characteristics, serves as a helpful guide for identifying potentially suspicious lesions.

Other concerning symptoms include a mole that bleeds spontaneously, becomes itchy, or causes pain. While many red moles are harmless, some types of skin cancer, such as amelanotic melanoma, can sometimes appear reddish or flesh-colored, making a professional assessment important for any new or changing lesion. Observing these signs and seeking timely medical advice can aid in early detection and appropriate management.

Medical Evaluation and Options

When a red mole causes concern or irritation, a medical evaluation typically begins with a visual inspection by a healthcare professional. A dermatologist may use a dermatoscope, a specialized handheld microscope, to examine the mole more closely for any suspicious features. This non-invasive tool allows for a magnified view of the mole’s structure and pigment patterns, aiding in differentiation between benign and malignant lesions. If the mole appears atypical or suspicious, a biopsy may be performed, where a small tissue sample is removed for microscopic examination.

For benign red moles, removal is generally for cosmetic reasons or if they are frequently irritated by clothing or shaving. Common removal options include laser therapy, which uses concentrated light to destroy the blood vessels in the mole, or electrocautery, which uses heat from an electrical current to burn off the growth. Cryotherapy, involving freezing the mole with liquid nitrogen, is another method that can be used. These procedures are typically quick and performed in an outpatient setting.