Thinning eyebrows can sometimes signal internal health issues. As Livestrong.com notes, “hypothyroidism—an underactive thyroid—can cause general hair thinning, including eyebrows.” Another possible cause is atopic dermatitis, a skin condition affecting many people and known to trigger eyebrow loss.

Unusual facial hair or severe acne may also be warning signs. While light peach fuzz and occasional breakouts are common, excessive hair growth or intense acne can indicate Polycystic Ovary Syndrome. PCOS is associated with “irregular periods, infertility, obesity, and abnormal hair growth,” so medical advice is important if these symptoms appear.

Red facial or neck rashes shouldn’t be ignored. Persistent bumps or irritation may point to autoimmune conditions such as lupus or digestive issues like celiac disease. If rashes don’t go away, it’s best to get them checked.

Dark circles under the eyes are usually linked to fatigue. But when they come with “red or black spots,” it may suggest dermatomyositis, an autoimmune disorder that causes muscle weakness and pain.

These symptoms can appear alone and may not always signal a serious issue. Still, ongoing or combined facial changes should be evaluated by a healthcare professional.