Persistent rashes should never be ignored. They can result from allergies, medications, or infections like chickenpox. In rare cases, severe rashes may signal life-threatening conditions such as Stevens-Johnson syndrome, which requires immediate medical attention.

Swelling, especially if it happens often, could point to hypothyroidism, where the thyroid doesn’t produce enough hormones. Other signs include dry skin, hair loss, and unexplained weight gain. If you experience these, seeing an endocrinologist is a good idea.
Moles are usually harmless, but if one changes in size, color, or texture—or starts hurting—it’s worth getting checked. Sudden changes could indicate a more serious issue.

Flaky skin might seem like a minor annoyance, but if it’s severe, it could signal a vitamin deficiency, hormonal imbalance, or even an autoimmune disorder.

Lastly, excessive sweating and chronic itching could be signs of Graves’ disease, an autoimmune disorder affecting the thyroid. If you have these symptoms along with thinner skin, a medical evaluation is essential.