Doctors were stunned after diagnosing a 46-year-old woman with a fungal colony growing inside her nasal cavity, all caused by a simple habit she never thought could harm her. The case has now become a public health warning, as the behavior is extremely common and often overlooked.

Mysterious symptoms that kept getting worse

For weeks, the woman experienced:

• persistent nasal congestion

• a foul smell coming from her nose

• mild headaches

• occasional nasal bleeding

Initially, she believed it was just a sinus infection and tried various home remedies. However, when the symptoms worsened, she finally sought medical attention.

During a nasal endoscopy, doctors discovered something shocking: a cluster of fungal filaments attaching to the nasal mucosa and spreading deep into the sinus cavity.

The fungal mass had to be removed immediately to prevent further invasion.

The “harmless habit” that caused the fungal growth

After reviewing her daily routine, doctors identified the culprit:

She frequently used her fingers to pick or scratch inside her nose.

While this seems harmless, doctors explained that:

• Fingernails carry bacteria, fungi, and spores

• Scratching the nasal lining can cause micro-injuries

• These tiny wounds allow fungi to enter, attach, and thrive

• The warm, moist nasal cavity becomes a perfect environment for fungal growth

This combination led to the formation of a fungal colony (fungal ball) inside her nose.

The habit is so common that nearly everyone has done it at some point — yet few realize it can lead to serious infections.

Why fungal infections in the nose are dangerous

If untreated, fungal sinus infections can cause:

• chronic sinusitis

• facial pain and swelling

• spreading infection to the eyes

• vision loss

• invasive fungal disease (fatal in severe cases)

Fortunately, the woman was treated in time, but doctors warned she could have faced permanent damage if she had delayed further.

Doctor’s advice: Stop this everyday habit

Experts emphasize:

Do NOT put fingers inside your nose — ever.

To keep the nasal cavity healthy:

• Use saline spray to moisten dry mucus

• Trim fingernails and wash hands regularly

• Avoid scratching the inside of your nose

• Seek medical care if congestion or foul odor persists

The nose is a sensitive organ, and even small injuries can become a gateway for bacteria and fungi.