**Core Concept**
Viral thyroiditis is an inflammatory condition affecting the thyroid gland, caused by a viral infection. It is characterized by inflammation of the thyroid tissue, leading to a range of symptoms and clinical presentations.

**Why the Correct Answer is Right**
Viral thyroiditis, also known as subacute thyroiditis, typically presents with a painful thyroid gland (B) and elevated erythrocyte sedimentation rate (ESR) (D). The condition is often self-limiting (A), meaning it resolves on its own without treatment. However, the initial presentation of viral thyroiditis is not typically hypothyroidism, as the inflammation of the thyroid gland can lead to a transient hyperthyroid state due to the release of pre-formed thyroid hormones. This is followed by a hypothyroid phase as the thyroid gland's ability to produce thyroid hormones is impaired. However, the initial phase is more commonly associated with hyperthyroidism rather than hypothyroidism.

**Why Each Wrong Option is Incorrect**
**Option A:** The condition is indeed self-limiting, as it typically resolves on its own without treatment.
**Option B:** The condition is characterized by painful thyroid gland, making this statement true.
**Option D:** Elevated ESR is a common finding in viral thyroiditis, making this statement true.

**Clinical Pearl / High-Yield Fact**
It's essential to note that the initial presentation of viral thyroiditis can be variable, but it's often associated with a painful thyroid gland and transient hyperthyroidism due to the release of pre-formed thyroid hormones.

**✓ Correct Answer: C. Initial hypothyroid state**