There are many factors affecting hyperthyroidism including a common cause which is Grave's disease. For those with Grave's disease, the immune system in the body secretes thyroxine uncontrollably stimulated by the antibodies being produced. Grave's disease leads to eye irritation and swelling, and vision impairment. Genetics might play a part in being a causing factor to Grave's disease. Hyperactive thyroid nodules produce excessive thyroxine hormones that leads to an overactive thyroid. Thyroiditis can also lead to hyperthyroidism.  

The symptoms for hyperthyroidism might include: 
- Anxiety, nervousness, and irritability 
- Bulging eyes
- Changes in menstruation 
- Diarrhoea
- Fast heart rate and palpitations
- Fatigue and lethargy
- Muscle weakness and trembling 
- Sensitivty to heat 
- Sleeping difficulties
- Weight loss 

The symptoms for hypothyroidism might include:
- Changes in menstruation 
- Constipation
- Depression
- Fatigue and sluggishness
- Fragile fingernails and hair 
- Pale skin and puffy face 
- Sensitivity to cold
- Slow heart rate 
- Weight gain

Factors such as age,physical condition, cause, and severity, all affects the treatment for hyperthyroidism. Options for treatment includes: 

Anti-Thyroid Medicine is recommended as the best treatment option as it blocks the secretion of thyroid hormones. This reduces symptoms shows for hyperthyroidism.

Hormone Replacement Therapy aims to control the levels of thyroid hormones by utilizing a syntetic thyroid hormone pill.

Radioactive Iodine Treatment - will be used if you are unresponsive to the anti-thyroid medications. 

Radioactive Iodine is administered orally and can reduce the thyroid activity immensely and even permanently. 

Surgical Removal - this treatment is reommended when alternative treatments show ineffective. You might need to take life-long medication to maintain normal thyroid hormone levels. 

Problems associated with the eyes include bulging eyes and blurry vision (caused by Grave's disease).

Fever and hallucinations.

Irregular heart rhythm and heart failure.

Osteoporosis (bone condition characterised by weak and brittle bones)