Swelling of thyroid gland can be due to many reasons. Swelling of thyroid is generally referred as goitre.Enlargement of thyroid gland can occur normally. It is called physiological. Goitre
. However certain investigations are required
1. Ultra sound of neck
2 Blood test for T3,T4,and TSH
3. FNAC is required for definitive diagnosis.
If Ultra sound shows nodule, then USG guided FNAC and before that Tc Scan is required.