Synopsis
Differentiate destructive thyroiditis phenotypes from Graves and bacterial infection, treat pain and adrenergic symptoms appropriately, and anticipate temporary or permanent hypothyroidism.
- Subacute de Quervain thyroiditis is typically painful and tender after a viral-like illness, with raised inflammatory markers and transient destructive thyrotoxicosis.
- Painless or silent thyroiditis is autoimmune and non-tender, while postpartum thyroiditis occurs within the first year after birth and is also usually painless.
- Destructive follicular injury releases stored hormone, so uptake is low and antithyroid medicines are ineffective because synthesis is not the driver.
- The course may be thyrotoxic then hypothyroid then recovery, but a patient may present in only one phase and some remain permanently hypothyroid.
- Use a beta blocker for troublesome adrenergic symptoms when safe; treat de Quervain pain with an NSAID first and specialist glucocorticoid when severe or unresponsive.
- A tender gland plus high ESR or CRP supports subacute thyroiditis, but focal sepsis, haemorrhage into a nodule and malignancy remain alternative painful-neck diagnoses.
- TRAb and selective scintigraphy help distinguish painless or postpartum thyroiditis from Graves when clinical findings do not settle the mechanism.
- Breastfeeding changes radionuclide imaging and medicine choices; involve nuclear medicine and maternal specialists rather than applying non-lactating instructions.
- Levothyroxine may be appropriate during the hypothyroid phase when symptoms are substantial or pregnancy and fertility considerations apply, with later reassessment for recovery.
- After postpartum thyroiditis, counsel about recurrence in later pregnancies and future permanent hypothyroidism, and arrange long-term thyroid surveillance.
Key red flags
Toxic appearance, focal unilateral swelling, erythema, fluctuation, marked neutrophilia, immunosuppression or an anatomical fistula raises bacterial infection and warrants emergency ENT assessment.
Suicidal thoughts, inability to care safely for self or infant, mania, hallucinations or profound confusion requires immediate perinatal psychiatric and safeguarding response, even when thyroid dysfunction may contribute.
Investigation priorities
Identify current phase and establish a trend across destructive disease.
Management branches
Anterior neck pain and thyroid tenderness accompany thyroid dysfunction.
- Assess airway, focal swelling, sepsis, immunosuppression and nodule haemorrhage; urgent red flags take priority over an assumed de Quervain diagnosis.
- Measure thyroid profile, CRP or ESR and full blood count, adding cultures and targeted ultrasound when bacterial disease is plausible.
- If the classic non-suppurative pattern is stable, use analgesic anti-inflammatory treatment and symptom control, then track progression through the hormone phases.
Key medicines
Ibuprofen for subacute thyroid painUse the lowest effective BNF-listed oral anti-inflammatory dose for the shortest duration, commonly 200 to 400 mg up to three times daily with or after food in suitable adults.Check peptic ulcer, renal impairment, heart failure, anticoagulation, asthma sensitivity, pregnancy and other NSAIDs. Severe persistent pain or sepsis features need reassessment, not indefinite self-escalation.
Prednisolone for severe subacute thyroiditisUse only an endocrine-agreed oral course and taper from the current local or BNF-informed protocol when severe pain fails appropriate NSAID treatment or NSAIDs are unsuitable.Exclude bacterial infection, consider diabetes, infection, bone, mood and gastrointestinal risks, and avoid abrupt cessation after a prolonged course. Recurrent pain during taper needs review.