D22.4

Clinical Causes: Genetic factors: Family history can predispose individuals to develop multiple nevi. Sun exposure: Ultraviolet (UV) radiation from sunbathing or tanning increases the formation of new moles and can alter existing ones. Hormonal changes: Puberty, pregnancy, or hormonal therapies may influence the development and appearance of moles. Skin type: Fair-skinned individuals tend to develop more nevi due to lower melanin levels. Age-related factors: The number and appearance of nevi can change over time, often increasing during childhood and adolescence.

Key Symptoms: Development of new moles on the scalp or neck. Existing moles that change in size, shape, or color. Moles that become itchy, tender, or sore. Irregular borders or uneven coloration of a mole. Moles that bleed, crust, or ulcerate. In some cases, moles may be flat or raised and smoothly pigmented.

Diagnosis Path: Diagnosis usually involves a visual skin examination by a healthcare professional. They look for signs of atypical or suspicious features such as asymmetry, irregular borders, multiple colors, diameter larger than 6mm, and evolving changes. Dermoscopy, a specialized skin imaging technique, may be used to examine the mole in more detail. In certain cases, a skin biopsy might be performed to confirm the diagnosis or to rule out melanoma or other skin conditions.

Treatment Protocols: Most melanocytic nevi do not require treatment unless they cause discomfort, aesthetic concerns, or show signs of abnormal changes. Typical management options include: - Regular monitoring and self-examination for any changes in appearance. - Surgical removal of the mole if it becomes suspicious, irritating, or cosmetically bothersome. - Medical procedures like laser removal or cryotherapy are generally not first-line treatments for pigmented nevi. - Ongoing skin checks by a healthcare professional, especially for individuals with many nevi or a history of atypical moles or skin cancer risk factors.