Blood in stool (bright red or dark/tarry)
Persistent diarrhea or constipation
Changes in stool shape (narrower than usual)
Feeling that bowel doesn’t empty completely
When to worry: Any persistent change lasting more than 2 weeks.
6. Difficulty Swallowing
What to watch for: Food feels stuck in your throat or chest. Swallowing becomes effortful or painful.
When to worry: Any episode of food feeling stuck.
7. Skin Changes
What to watch for:
New moles or spots
Changes to existing moles (size, shape, color)
Sores that don’t heal
Yellowing skin or eyes (jaundice)
The ABCDE rule for moles:
Asymmetry: One half doesn’t match the other
Border: Irregular, scalloped edges
Color: Varied shades
Diameter: Larger than 6mm (pencil eraser size)
Evolving: Changing in any way
When to worry: Any new or changing spot—see a dermatologist.
8. Unexplained Bleeding
What to watch for:
Blood in urine or stool
Coughing up blood
