Certain facial changes can signal underlying health conditions. For instance, thinning eyebrows may be more than just a cosmetic issue. According to Livestrong.com, hypothyroidism—an underactive thyroid—can cause general hair thinning, including eyebrows. Another cause might be atopic dermatitis, a skin condition affecting 20% of the population, which can lead to eyebrow loss.

Unusual facial hair and intense acne can also be red flags. While peach fuzz and mild breakouts are normal, excessive facial hair or severe acne may signal Polycystic Ovary Syndrome (PCOS). PCOS is linked to irregular periods, infertility, obesity, and abnormal hair growth. If you notice these symptoms, consult your doctor.

Red rashes or bumps on the face or neck could be more than skin irritation. These symptoms can point to autoimmune diseases like lupus or digestive issues such as celiac disease. Don’t ignore persistent rashes—get them checked out.

Dark under-eye circles are often caused by lack of sleep. However, if they’re accompanied by red or black spots, it could be a sign of dermatomyositis, an autoimmune disorder that causes muscle pain and weakness.

Each of these symptoms can occur on its own, but persistent or combined changes should be evaluated by a healthcare professional.

Pay close attention to changes in your skin and hair—they can provide early clues to what’s happening inside your body. Have you experienced any of these facial changes? Share your story.