1. Neck Area (Especially the Back or Sides)
Dark, velvety patches around the neck are usually linked to insulin resistance, hormonal imbalance, or weight changes—not cancer.
2. Underarms
The underarms can darken due to shaving, friction, deodorants, or genetics.
However, sudden and noticeable darkening—especially if the texture changes—may signal hormonal shifts or metabolic disorders.
If the darkening appears along with weight loss, fatigue, or unusual symptoms, a doctor should evaluate it.
3. Groin or Inner Thighs
These areas often darken from friction or pigmentation changes common in many people.
But persistent or sharply spreading dark patches, especially if combined with itching or thickening, may indicate infection, hormonal imbalance, or other medical conditions requiring care.Continue reading…