Hi Greetings 1. Hearing aids are used for hearing loss which can happen due to ageing , or sometimes due to ear disorders or infections. 2. Hearing loss can happen in a child if the mother is exposed to certain ototoxic drugs, or viral infections such as measles , rubella during pregnancy. 3. Excessive use of earphones can cause auditory fatigue and temporary weakness in hearing.

1. Hearing aids are recommended when hearing loss affects daily communication. Common symptoms include difficulty understanding conversations, frequently asking people to repeat themselves, increasing TV volume, and tinnitus. 2.Yes. Hearing loss can be hereditary or result from infections during pregnancy or complications around birth. If both parents carry the same autosomal recessive hearing-loss gene, the risk is 25% per pregnancy. The actual risk depends on the cause. 3. Both are possible. Prolonged exposure to loud music can cause permanent hearing loss, while hereditary hearing loss may develop early or later in life. Pure-tone audiometry, clinical history and family history help identify the likely cause.

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Hearing loss in a baby is usually linked to genetics or certain infections during pregnancy, like rubella or cytomegalovirus, rather than being caused by the birth process itself. There isn't a single percentage that applies generally, since it depends on the specific cause in that family.