as dry skin or irritation.
In others, it can be associated with allergies, infections, nerve problems, medication reactions, or certain underlying medical conditions.
That does not mean that every itchy patch is a warning sign of serious disease.
Most itching has an ordinary explanation.
But persistent or unexplained itching deserves more attention than a temporary itch that disappears within minutes.
Here are nine areas where ongoing itching can sometimes provide clues about what is happening in the body—and when it may be worth getting checked.
Da bị ngứa có phải là dấu hiệu của ung thư không? | Vinmec
- The Scalp: More Than Just Dandruff
The scalp is one of the most common places for itching.
Sometimes the explanation is obvious.
Dry skin, dandruff, sweat, hair products, or infrequent washing can all make the scalp itchy.
But persistent scalp itching can have several different causes.
One common cause is seborrheic dermatitis,
