Fibromyalgia: This condition is characterized by widespread musculoskeletal pain, fatigue, sleep, memory, and mood issues. The patient's complaint of pain and aches all over the body and difficulty sleeping aligns with the typical presentation of fibromyalgia.

Hypothyroidism: Can cause widespread musculoskeletal pain, fatigue, and sleep disturbances. It's a common condition that can present with nonspecific symptoms, making it a plausible diagnosis.
Osteoarthritis: Although it typically affects specific joints, in some cases, it can cause widespread pain, especially if multiple joints are involved. The patient's age and symptoms could align with a diagnosis of osteoarthritis.
Vitamin D Deficiency: Can cause bone pain and muscle weakness, and is a relatively common condition, especially in individuals with limited sun exposure or dietary deficiencies.

Multiple Myeloma: A type of blood cancer that can cause bone pain, fatigue, and sleep disturbances due to bone lesions. Although less common, missing this diagnosis could have severe consequences.
Metastatic Bone Disease: Cancer that has spread to the bones can cause widespread bone pain. Given the potential severity of this condition, it's crucial to consider it in the differential diagnosis.
Osteomalacia: Softening of the bones due to vitamin D deficiency or phosphate metabolism disorders, which can cause bone pain and muscle weakness. While less common, it has significant implications for bone health.

Paget's Disease of Bone: A chronic condition that can result in enlarged and misshapen bones due to abnormal bone destruction and regrowth. It can cause bone pain and is more common in older adults.
Sarcoidosis: An inflammatory disease that can affect multiple parts of the body, including the bones, causing pain and other systemic symptoms. It's less common but should be considered in patients with unexplained widespread bone pain.