Autoimmune thyroiditis results in

Options

A. Simmond's disease
B. Minimata disease
C. Grave's disease
D. Hashimoto disease

Answer

**Step-by-Step Solution:**

1. **Understanding Autoimmune Thyroiditis**: Autoimmune thyroiditis refers to a condition where the immune system mistakenly attacks the thyroid gland, leading to inflammation and dysfunction. The most common form of autoimmune thyroiditis is Hashimoto's disease.

2. **Analyzing the Options**:
- **Option A: Simon Disease**: This disease is caused by the destruction of the anterior lobe of the pituitary gland and does not relate to thyroiditis. Hence, it is incorrect.
- **Option B: Minamata Disease**: This disease is a result of mercury poisoning and is not connected to autoimmune thyroiditis. Therefore, this option is also incorrect.
- **Option C: Grave Disease**: While Graves' disease is an autoimmune disorder related to the thyroid, it primarily causes hyperthyroidism rather than thyroiditis. Thus, it does not fit the definition of autoimmune thyroiditis.
- **Option D: Hashimoto Disease**: This is a specific autoimmune condition that leads to thyroiditis, characterized by the immune system attacking the thyroid gland, resulting in hypothyroidism. This is the correct answer.

3. **Conclusion**: Based on the analysis of the options, the correct answer is Hashimoto disease, as it directly results in autoimmune thyroiditis.

**Final Answer**: Autoimmune thyroiditis results in Hashimoto disease.

---