Hi, Hair loss, including eyelashes and nails, can be caused by various factors, including hormonal changes, nutritional deficiencies, medical conditions, and certain medications. To help control hair loss, it is important to ensure your daughter gets enough of the essential nutrients needed for healthy hair growth, such as iron, zinc, and biotin. A balanced diet with plenty of fruits, vegetables, and lean protein can help. She may also consider taking a multivitamin or a hair, skin, and nail supplement that contains these nutrients. It s also important to avoid any harsh hair treatments like excessive heat styling, chemical treatments, and tight hairstyles that can damage the hair. She should also practice good hygiene by keeping her scalp and hair clean and avoiding excessive rubbing or pulling of the hair. If the problem continues, you should consult a dermatologist for further examination and suggest appropriate treatment if necessary. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician