While uncommon, individuals can experience allergic reactions to hearing aids. These medical instruments are designed for close, prolonged contact with the sensitive skin of the ear, meaning certain materials can trigger an immune response in some people. Understanding this possibility is the first step in addressing any discomfort that may arise from wearing these devices.
Identifying Allergic Symptoms
Allergic reactions to hearing aids involve localized changes around or within the ear. Common symptoms include persistent itching, inflammation, and redness of the skin. Individuals might also notice a sore sensation, a rash, or in more severe cases, blistering or discharge from the ear. These reactions are typically confined to the area where the hearing aid or its components make direct contact with the skin.
Beyond visible skin changes, discomfort and pain can also signal an allergic response. Swelling in the ear canal may occur, which could lead to a feeling of fullness or even partial blockage. Such symptoms can make wearing the hearing aid uncomfortable. If these signs appear after starting or changing a hearing aid, an allergic reaction should be considered.
Materials That May Cause Reactions
Allergic reactions to hearing aids are attributed to specific materials used in their construction. Acrylics, particularly those that are not fully cured during manufacturing, are known to cause contact dermatitis in some individuals. Silicones, though considered hypoallergenic, can also trigger reactions in sensitive users. UV-cured resins, frequently used in custom molds, can similarly lead to irritation if residual monomers are present.
Dyes and certain metals, even in minute quantities, can also be culprits. For instance, nickel, sometimes found in small amounts in battery doors or internal components, can cause an issue. While manufacturers increasingly use biocompatible and tested materials to minimize such risks, individual sensitivities vary. Identifying the specific allergenic substance can be challenging due to the complex composition of hearing aids.
Steps to Take for an Allergic Reaction
If an allergic reaction to a hearing aid is suspected, the first step is to stop wearing the device. This removes the source of irritation and can prevent further worsening of symptoms. Following this, promptly contact your audiologist or hearing care professional to report the reaction. They can assess the situation and guide you on the next steps, which may include a temporary break from the hearing aid or exploring alternative options.
Seeking medical advice from a doctor, dermatologist, or allergist is important to diagnose the allergy and manage symptoms. A medical professional can prescribe topical creams or other treatments to relieve itching, redness, and inflammation. They can also help identify the specific material causing the reaction, which is important for finding a suitable long-term solution. Potential solutions include custom molds made from hypoallergenic materials such as medical-grade silicone, heat-cured acrylic, polyethylene, or even gold or titanium plating. In some cases, an alternative hearing aid style that has less contact with the sensitive areas of the ear may be recommended.