O papel do hiponíquio na proteção das unhas

The hyponychium, located beneath the free edge of the nail plate at the distal edge of the finger, plays a critical role in protecting the nail unit. This structure forms (together with the onychodermal band) a tight seal that prevents the entry of harmful bacteria, allergens, and pathogens into the delicate areas of the nail, such as the nail bed and matrix. By acting as a barrier, the hyponychium ensures the overall health and integrity of the nail unit. The hyponychium is one of the 4 Guardian Seals of the nail unit.

Terminações nervosas e o sistema de alerta

A presença de várias terminações nervosas no hiponíquio funciona como um sistema de alerta. Quando essa vedação protetora é comprometida, essas terminações nervosas enviam sinais que causam desconforto ou dor, alertando sobre possíveis danos ou infecções. Uma ruptura na vedação permite que os agentes patogênicos entrem no leito ungueal sensível, aumentando o risco de infecção.

Sinais de infecção ou dano

In some cases, the hyponychium may thicken or become discolored, which could indicate an  infection. Other possible causes include damage from trauma, exposure to chemicals, or an underlying systemic condition or even an allergic reaction. Infection or damage here can also lead to the development of an extended and thickened hyponychium, a condition known as inverse pterygium.  If an infection looks like it could possibly be fungal, it is necessary to perform tests, as visual examination alone is insufficient. Untreated, this condition can and will cause onycholysis, the separation of the nail plate from the nail bed, it’s a serious issue that can compromise the nail’s health.

Manutenção da saúde do hiponíquio por meio de cuidados adequados com as unhas

Good nail hygiene is essential for maintaining the hyponychium’s integrity. Regular cleaning of the nail area and keeping it free from dirt and debris is crucial. Additionally, it is important to avoid activities that may cause trauma to the hyponychium, ensuring its ability to function effectively as a protective barrier.

Pergunte aos especialistas

Como o crescimento excessivo do hiponíquio é tratado?

This is called inverse pterygium. It will usually have blood and nerve endings and needs to be left alone. Regular applications of a good nail oil will help keep it supple and not become dry.

Como você empurra o hiponíquio para trás?

You don’t push back the hyponychium. It is a important seal of the nail unit and should be left alone.

Qual é a diferença entre hyponychium e eponychium?

The hyponychium is a strong seal at the end of the finger and under the free edge. The eponychium is an area under the proximal nail fold that sheds the dead skin cells of the proximal nail fold called the cuticle. The cuticle and proximal nail fold form another strong and important seal of the nail unit.

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