Which condition involves excessive thickening of the nail plate?

Onychauxis is characterized by an excessive thickening of the nail plate. This condition can occur due to various factors, including trauma, fungal infections, or underlying health issues. The thickening may lead to changes in the texture and appearance of the nails, making them appear raised or overly bulky. It's important to differentiate onychauxis from other conditions; for example, while onychocryptosis refers to ingrown nails, onychophagy is the habit of nail biting, and koilonychia involves nails that are concave or spoon-shaped. Understanding these differences helps in identifying and treating specific nail disorders effectively.