Adults and Elderly Some of the most common symptoms of hypothyroidism may include:

• Feeling sluggish or tired
• Weakness
• Thin or course hair
• Brittle nails
• Yellow tinted skin
• Memory problems
• Low tolerance to cold
• Cold skin
• Depression
• Difficulty concentrating
• Constipation
• Irregular or heavy menstrual periods

Some symptoms of hypothyroidism that may be present though less common are:

• Muscle cramps and aches
• Swelling of the extremities
• Puffiness around the eyes
• Enlargement of the thyroid gland or goiter
• Slight weight gain
• Hoarseness

Infants and Children Symptoms of hypothyroidism in infants and children can often be so mild that they are difficult to detect, and are commonly mistaken for other illnesses.
These symptoms may include:

• Poor performance in school
• Lack of concentration
• Goiter or swelling at the front base of the neck
• Scaling of the skin
• Difficulty or inability swallowing food
• Lack of appetite
• Behavioral problems
• Weight gain
• Slow growth

It is important to note that left undiagnosed and untreated, the symptoms of hypothyroidism in infants and children can lead to a lifetime of health problems and stunt physical growth.
If the symptoms of hypothyroidism are treated within the first month of life the child will be able to develop normally.
Long Term Effects Although the symptoms of hypothyroidism can disappear on their own over time, it is most likely that they will lead to loss of thyroid function and a lifetime of other physical diseases.
These diseases include:

• Sleep apnea
• Fluid around the heart
• Risk of coronary artery disease
• High cholesterol and triglycerides

Who is at Risk There are many physical and environmental factors that may increase your risk of developing the symptoms of hypothyroidism these may include and are not limited to: Family history: the symptoms of hypothyroidism may be genetic, it is important to discuss your family medical history with your physician.
Age: Symptoms of hypothyroidism are more likely to occur in the elderly.
Medications: Some medications can interfere with the thyroid gland.
Other factors: Diabetes or autoimmune disease may contribute to the onset of symptoms of hypothyroidism.
Call your Doctor Call your doctor or emergency medical officials immediately if you experience any of these more severe symptoms of hypothyroidism:

• Slow or shallow breathing
• Confusion, psychosis, or rapid mental deterioration
• Extreme weakness
• Loss of consciousness