Brief Answer:
Tremors/ Shaking needs work up and correlation

Detailed Answer:
Thank you for asking

I read your question and i understand your concern. Shaking and tremor is a symptoms with many possibilities underneath. At old age most of the time parkinsonism and other basal ganglia disorders and cerebellar disorders are the reason for the tremors. You are just 34 so i don't suspect any such basal ganglia disorder unless you have some family history which could make it more likely to be the cause of these tremors.

Major cause for tremors in your age are either psychogenic tremors or hormonal imbalance and metabolism related like hyperthyroidism where thyroid works at exaggerated pace. You should get thyroid function tests and let it be ruled out of the possibilities.

other possibilities are the medicine induced shakings and tremors most commonly due to the stimulants like amphetamines, caffeine etc. Other medications that may cause shaking and tremors are
Amiodarone
Amphetamines
Atorvastatin (Lipitor)
Beta-adrenergic agonists (e.g., albuterol)
Caffeine
Carbamazepine (Tegretol)
Corticosteroids
Cyclosporine (Sandimmune)
Epinephrine
Fluoxetine (Prozac)
Haloperidol
Hypoglycemic agents
Lithium
Metoclopramide (Reglan)
Methylphenidate (Ritalin)
Pseudoephedrine
Terbutaline
Theophylline
Thyroid hormones
Tricyclic antidepressants
Valproic acid (Depakene)
Verapamil

Nutshell, get a neurologist, let the,m do a complete physical examination followed by a few labs and radiographs and we all will have our answers.

I hope that helps. take good care of yourself and dont forget to close the discussion please.

Regards
Khan

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