If there are can.cer cells in the body, these 5 areas may start to darken abnormally. Don’t ignore the warning!

4. Elbows and Knees

Dark elbows and knees are normally caused by dry skin or pressure—but rapid, unexplained darkening can sometimes accompany autoimmune or endocrine disorders.

If the skin feels unusually thick, rough, or changes color suddenly, it’s worth checking.

5. Skin Folds (Under the Breasts, Belly Folds, or Groin)

Any skin fold can darken from moisture, friction, or fungal infections.
But if the darkening becomes widespread, textured, or appears suddenly, it may reflect changes in blood sugar or hormones.

Unusual pigmentation in folds deserves a medical look—especially if it appears quickly.

⚠️ Important Note: Dark Skin Patches Are Not a Diagnosis of Cancer

Darkening of the skin—called hyperpigmentation—is extremely common and often harmless.
However, what does require medical attention is:

sudden or fast-spreading discoloration

dark patches with unusual texture

patches accompanied by weight loss, fatigue, or other symptoms

any mole or spot that changes color, shape, or size

Early evaluation is always better than late detection.