Polymyositis: This is an autoimmune disease that affects the muscles, leading to inflammation and muscle damage, which can cause elevated creatine kinase (CK) levels. The normal aldolase level does not rule out polymyositis, as aldolase can be elevated in muscle damage but is not specific to muscle disorders.

Dermatomyositis: Similar to polymyositis, dermatomyositis is an autoimmune condition that affects the muscles and the skin, leading to muscle weakness and skin rash. Elevated CK levels are common, and while aldolase might be elevated in some cases, a normal level does not exclude the diagnosis.
Inclusion Body Myositis (IBM): This is the most common acquired myopathy in adults older than 50, but it can occur in younger individuals. It presents with progressive muscle weakness and elevated CK levels. IBM can have a slower progression and might not always present with significantly elevated aldolase.
Thyroid-Associated Myopathy: Both hyperthyroidism and hypothyroidism can lead to muscle damage and elevated CK levels. The normal aldolase level does not exclude this diagnosis, as thyroid-associated myopathies can have variable effects on muscle enzymes.

McArdle Disease (Glycogen Storage Disease Type V): Although rare, this condition can present with exercise-induced muscle damage and elevated CK levels. A normal aldolase level might be seen because aldolase is not directly involved in the glycogen metabolism pathway affected in McArdle disease. Missing this diagnosis could lead to inappropriate exercise advice and potential serious muscle damage.
Rhabdomyolysis: This condition involves the breakdown of muscle tissue and can be caused by various factors, including extreme physical exertion, certain medications, or drug abuse. It is crucial to identify and treat promptly to prevent kidney damage. While CK is typically very high, aldolase might not be as significantly elevated, especially if the muscle damage is not widespread.

Limb-Girdle Muscular Dystrophy: A group of genetic disorders characterized by progressive muscle weakness around the shoulders and hips. Elevated CK levels are common, but the normal aldolase level does not exclude this diagnosis. It's a rare condition and might not be the first consideration but should be kept in mind, especially with a family history.
Eosinophilic Myositis: A rare condition characterized by muscle inflammation associated with eosinophilia. It can present with elevated CK levels, and while aldolase might be elevated in some cases, a normal level does not rule out the diagnosis. This condition is rare and might require specific diagnostic tests to confirm.