Growing Hair in the Mouth: What Does It Mean?

Hair growing inside the mouth is very rare. In most cases, what people think is “hair growing” is actually something else, like trapped hair or a medical condition that looks hair-like. Here are the main possibilities, explained simply:

1. Hair Stuck, Not Growing

The most common reason is loose hair getting trapped on the tongue, gums, or throat mucus. Saliva can make it stick and feel like it’s growing, even though it isn’t.

2. After Surgery or Skin Grafts (Rare)

In very rare cases, people who have had reconstructive surgery inside the mouth (using skin from another part of the body) may have hair grow there because skin naturally contains hair follicles.

3. Dermoid or Teratoid Cysts (Very Rare)

Some uncommon, non-cancerous cysts can contain tissues like hair. These usually form under the tongue or in the jaw, not directly on the surface of the mouth.

4. Hormonal or Genetic Conditions

Hormonal imbalances can cause extra hair growth on the body or face, but they do not usually cause hair to grow inside the mouth.

5. Not Hair, but Hair-Like

Certain oral conditions (like coated tongue or fungal infections) can create stringy or thread-like textures that may be mistaken for hair.

When to See a Doctor or Dentist

You should tell a trusted adult and see a healthcare professional if:

• You clearly see hair repeatedly coming from the same spot

• There is pain, swelling, or a lump

• It interferes with eating, speaking, or breathing

• It doesn’t go away after cleaning your mouth

Important Note

True hair growth inside the mouth is extremely uncommon, so a dentist or doctor should always check it to find the exact cause. Most cases turn out to be harmless and treatable.