Essential Tremor: This is a common movement disorder characterized by tremors, typically affecting the hands, and can be accompanied by headaches due to tension or stress. The bilateral nature of the tremors and the presence of daily headaches could align with essential tremor, especially if the headaches are tension-type.

Parkinson's Disease: Although less common than essential tremor, Parkinson's disease can present with tremors, and some patients may experience headaches, possibly due to the disease itself or as a side effect of medication. However, Parkinson's disease typically starts unilaterally.
Migraines with Tremor: Some individuals with migraines may experience tremors as part of their migraine aura or as a separate symptom. The daily headaches could be migraines, and the tremors could be related to the migraine pathology.
Anxiety or Stress-Related Tremors: Anxiety and stress can cause or exacerbate tremors, and these conditions are often associated with headaches, including tension headaches.

Multiple Sclerosis: Although less common, multiple sclerosis (MS) can present with a wide range of neurological symptoms, including tremors and headaches. MS is a "do not miss" diagnosis because early treatment can significantly impact the disease course.
Wilson's Disease: This rare genetic disorder leads to copper accumulation in the body and can cause neurological symptoms, including tremors, and sometimes headaches. It's crucial to diagnose Wilson's disease early to prevent irreversible damage.
Thyroid Disorders: Both hyperthyroidism and hypothyroidism can cause tremors, and some patients may experience headaches. These conditions are treatable and can significantly improve with appropriate management.

Friedreich's Ataxia: A rare genetic disorder that affects the nervous system and can cause tremors among other symptoms like ataxia. Headaches might not be a primary symptom but could occur.
Neurodegenerative Disorders (e.g., Spinocerebellar Ataxias): These are a group of rare genetic disorders that affect the cerebellum and can cause tremors, ataxia, and other neurological symptoms. Headaches could be part of the clinical presentation in some cases.
Whipple's Disease: An extremely rare bacterial infection that can affect the brain and cause a variety of neurological symptoms, including tremors and headaches, although this would be a very unusual presentation.