What disease would cause dropping things and being tired?

There are several possible causes for these symptoms, including:

- Vitamin B12 deficiency is a common cause of fatigue and weakness. It can also lead to problems with memory, concentration, and balance.

- Diabetes can cause fatigue, weight loss, and increased thirst and urination. It can also lead to problems with vision, nerve damage, and kidney disease.

- Hypothyroidism is a condition in which the thyroid gland doesn't produce enough thyroid hormone. This can cause fatigue, weight gain, constipation, and dry skin.

- Multiple sclerosis is a chronic autoimmune disease that affects the central nervous system. It can cause fatigue, weakness, numbness or tingling in the limbs, and problems with vision and balance.

- Parkinson's disease is a neurodegenerative disorder that affects movement. It can cause tremors, rigidity, slowness of movement, and problems with balance.

- Myasthenia gravis is a rare autoimmune disease that causes muscle weakness. It can affect the eyes, face, limbs, and respiratory muscles.

- Cancer can cause fatigue, weight loss, pain, and other symptoms depending on the type of cancer.

- Medications can also cause fatigue and weakness as side effects.

If you are experiencing these symptoms, it is important to see a doctor to determine the cause and receive appropriate treatment.