Smelly crusts behind the ears are a more common problem than you might think, but they are often overlooked or mistaken for poor hygiene.
In reality, in many cases it is a specific dermatological condition that requires proper attention.
Why do these scabs appear?
The area behind the ears is prone to accumulating moisture, oil, and sweat residue. This creates an ideal environment for bacteria and fungi to thrive, leading to sebum buildup, skin flaking, crusting, and an unpleasant odor.
Main medical causes
1. Seborrheic dermatitis
is the most common cause. It is a chronic inflammation of the skin related to excessive oil production and the presence of a fungus called Malassezia.
Common symptoms:
– Yellowish or whitish scabs
– Mild to moderate odor
– Itching
– Redness
2. Bacterial infection
When the area is irritated or frequently scratched, it can become infected.
Warning signs:
– Strong, unpleasant odor
– Wet discharge
– Pain or tenderness
– Inflammation
3. Eczema (contact dermatitis)
Can appear due to reactions to products such as shampoos, perfumes or even earrings.
Symptoms:
– Dry or cracked skin
– Scabs
– Intense itching
4. Psoriasis
In some cases, this autoimmune disease also affects the area behind the ears.
– Thick plaques
– Silvery scales
– Inflammation
Is the bad smell normal?
Not entirely; the odor appears when there is a buildup of bacteria, fungi, or secretions. If the odor is persistent or strong, it may indicate an infection or a skin imbalance.
How to treat it correctly?
Treatment depends on the cause, but the general recommendation in all cases is to maintain good hygiene and keep the skin dry. After this, depending on the cause, other treatment options will be recommended.
The main ones include:
– Antifungals (for seborrheic dermatitis)
– Antibiotics (if there is an infection)
– Anti-inflammatory creams
Smelly crusts behind the ears aren’t always related to hygiene. In many cases, they’re a sign of a treatable dermatological condition. Identifying the cause is key to eliminating the problem permanently.

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