Ive noticed a dark patch on the skin behind my left ear that started as a small spot but has grown to about the size of a coin in the shape of a banana. I also have a similar dark spot on my upper chest. Both of these started about a year ago and have been growing slowly since then. Theres no itching or discomfort, but Im getting worried. Could this be something serious or just a harmless skin issue?

The dark patches behind your ear and on your upper chest, which have been growing slowly over the past year, could be:Possible Causes1. Melasma: Hormonal changes can cause dark patches, especially on the face and chest.2. Post-Inflammatory Hyperpigmentation (PIH): Dark spots can appear after inflammation or injury.3. Seborrheic Keratoses: Benign growths that can appear as dark patches.4. Dermatosis Papulosa Nigra (DPN): A benign condition characterized by dark, velvety patches.Next Steps1. Consult a dermatologist: Get a professional diagnosis and guidance.2. Biopsy or examination: A dermatologist may perform a biopsy or examine the patches to determine the cause.3. Treatment options: Depending on the diagnosis, treatment may include topical creams, oral medications, or minor surgical procedures.Self-Care1. Sun protection: Use sunscreen with at least SPF 30 to prevent further darkening.2. Moisturize: Keep the skin hydrated with a gentle, non-comedogeni