Infectious Mononucleosis (Mono): This condition, caused by the Epstein-Barr virus, can lead to fever, night sweats, swollen lymph nodes, and general malaise. The headaches and bone pain could be related to the infection's impact on the body. Snoring might be less directly related but could be a symptom of overall discomfort or a secondary infection like tonsillitis. Teeth grinding (bruxism) can be a sign of stress or discomfort, which could be exacerbated by the illness.

Tuberculosis (TB): Although less common in some regions, TB can cause a wide range of symptoms including fever, night sweats, bone pain, and swollen lymph nodes. The headaches could be due to meningitis if TB has spread to the central nervous system. Snoring and teeth grinding might be indirect symptoms related to discomfort or secondary infections.
Lymphoma: This is a type of cancer that affects the immune system and can cause swollen lymph nodes, fever, night sweats, and bone pain. Headaches could be related to the disease's progression or secondary effects like anemia. Snoring and teeth grinding might be signs of stress or discomfort related to the illness.
Juvenile Idiopathic Arthritis (JIA): This condition can cause bone and joint pain, fever, and swollen lymph nodes. The headaches could be migraines triggered by the stress of chronic illness. Snoring and teeth grinding might be related to the discomfort or stress of dealing with chronic pain.

Meningitis: An infection of the membranes surrounding the brain and spinal cord, meningitis is a medical emergency. Symptoms can include fever, headache, and stiff neck. While snoring, teeth grinding, and bone pain are not typical primary symptoms, they could be present in a child who is very ill. It's crucial to consider meningitis due to its high morbidity and mortality if not promptly treated.
Osteomyelitis: A bone infection that can cause bone pain, fever, and swollen lymph nodes. If the infection spreads to the central nervous system, it could cause headaches. Snoring and teeth grinding might be signs of discomfort. This condition requires prompt antibiotic treatment to prevent long-term damage.
Leukemia: A type of blood cancer that can cause bone pain, fever, night sweats, and swollen lymph nodes. Headaches could be due to the disease itself or related conditions like anemia. Snoring and teeth grinding might be signs of stress or discomfort. Leukemia is a critical diagnosis to consider due to its severe implications if not treated promptly.

Langerhans Cell Histiocytosis (LCH): A rare disorder in which the body accumulates too many immature Langerhans cells, part of the immune system. It can cause a wide range of symptoms including bone pain, swollen lymph nodes, and fever. Headaches could be due to pituitary involvement or other central nervous system effects. Snoring and teeth grinding might be related to discomfort or stress.
Sarcoidosis: A condition that can affect multiple parts of the body and cause a variety of symptoms, including fever, night sweats, swollen lymph nodes, and bone pain. While rare in children, it's a diagnosis to consider when the presentation is multifaceted and no clear cause is found.