Detailed answer

To prevent a rash from wearing a watch, it is important to keep both the watch and the skin clean and dry. Clean the watch regularly to remove built-up dirt and sweat. Also, avoid wearing the watch for long periods of time, as the constant friction and moisture can irritate the skin. Take breaks from wearing the watch to allow the skin to breathe and recover. If you notice any signs of irritation or rash, remove the watch immediately and clean the area thoroughly. Additionally, consider using a hypoallergenic or silicone strap, as these materials are less likely to cause skin irritation. If the rash persists or worsens, consult a dermatologist for further evaluation and treatment.