This problem arises when the thyroid gland gets enlarged and leads to swelling in the neck and mainly occurs when the thyroid gland do not functions properly. A lump arises in front of neck due to this particular problem as a result of too much or too little thyroid hormones. This mainly occurs due to iodine deficiency in the body. So if there is decrease in the level of iodine in the body so, chances are there of occurrence of goiter.
In this type of goitre, the thyroid gland gets enlarged than the normal gland. The causes of this type of goitre are as follows:-
In this type of goitre a small lump is developed in the thyroid gland. It is usually divided into two types:-