In cases of moderate dehydration due to diarrhea in children, some common clinical manifestations include sunken eye sockets. If the anterior fontanelle has not closed in infants under one year old, it may appear sunken, and there can be a decrease in skin elasticity, dry lips and mucous membranes, and a reduction in urine output. Some may also experience increased heart rate, dry mouth, and a preference for drinking. In this situation, it is crucial to promptly rehydrate, primarily through oral rehydration. If oral rehydration is difficult, intravenous rehydration should be administered, while also maintaining the balance of water and electrolytes.