Hypothyroidism is a condition of the thyroid not producing enough thyroxine (T4) and triiodothyronine (T-3). An underactive thyroid is the result of the pituitary gland releasing too much thyroid-stimulating hormone (TSH), therefore causing the thyroid to not produce enough thyroid hormones. The lack of thyroid hormone can cause an array of symptoms.
Hypothyroidism can cause weight gain or the inability to lose weight. Cold intolerance or feeling cold in moderate climates is a symptom of metabolic difficulty.
Skin, Hair and Nails
The skin may be pale, dry and coarse. Hair tends to be dry and brittle with breakage. Nails may also be brittle and break easily.
Fatigue and weakness are common in hypothyroid suffers, especially in the morning.
Menstrual and Fertility
Heavier, more frequent, painful, and long periods can signal that the thyroid is not functioning as normal. Miscarriages and infertility are connected to hypothyroidism.
You may find that you are no longer mentally alert and are forgetful. Depression and irritability are commonly connected with hypothyroidism.
Muscle and Joint Pains
Muscles may be stiff, weak and ache. Joints can be swollen and painful. You may have difficulty swallowing and feel as if you have a lump in your throat.