Hyperthyroidism: This condition is characterized by an overproduction of thyroid hormones, which can lead to symptoms such as tremors, weakness, easy fatiguability, and an elevated white blood cell count due to the body's increased metabolic state.

Anxiety Disorder: Anxiety can cause tremors, weakness, and easy fatiguability due to the body's stress response. An elevated white count can be seen in chronic stress.
Chronic Infections (e.g., tuberculosis, endocarditis): Chronic infections can cause a prolonged elevation in white blood cell count and lead to systemic symptoms like weakness and fatigue.
Hematological Malignancies (e.g., leukemia): Certain types of leukemia can present with an elevated white blood cell count, weakness, and fatigue due to bone marrow infiltration and suppression of normal blood cell production.

Pheochromocytoma: Although rare, this tumor of the adrenal gland can cause episodic hypertension, tremors, and fatigue. It's crucial to diagnose due to its potential for severe cardiovascular complications.
Thyroid Storm: A life-threatening complication of untreated or undertreated hyperthyroidism, characterized by extreme symptoms of hyperthyroidism, including very high fever, confusion, and heart problems.
Sepsis: An overwhelming infection that can lead to an elevated white count, weakness, and fatigue. Early recognition is critical due to its high mortality rate if not promptly treated.

Wilson's Disease: A genetic disorder leading to copper accumulation in the body, which can cause neurological symptoms (including tremors), fatigue, and potentially an elevated white blood cell count due to liver involvement.
Multiple Myeloma: A plasma cell malignancy that can cause fatigue, weakness, and an elevated white count due to bone marrow infiltration and renal impairment.
Acromegaly: A disorder caused by excess growth hormone, leading to various systemic symptoms, including fatigue and weakness, though it is less commonly associated with an elevated white count.