Yes, thyroid conditions can cause hair loss, particularly when they are severe and prolonged.
Thyroid Disorders and Hair Loss
According to medical information updated on May 21, 2024, both severe and prolonged hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid) have been linked to hair loss.
This type of hair loss is typically:
- Diffuse: It affects the entire scalp rather than just specific patches.
- Widespread: Involves the whole head.
- Uniformly Sparse: The hair appears thin all over.
It's important to note that this hair loss is associated with significant and long-standing imbalances in thyroid hormone levels.
Regrowth with Treatment
The good news is that regrowth of hair is usual once the thyroid disorder is successfully treated. However, patients should be patient, as it can take several months to see significant improvement, and in some cases, the regrowth may not be complete.
Treating the underlying thyroid condition is the primary step in addressing this type of hair loss.
