Yes, thyroid problems can definitely cause hair fall and skin issues. When thyroid hormones are imbalanced—either too low (hypothyroidism) or too high (hyperthyroidism)—they affect the growth and repair of hair and skin cells. This can lead to excessive hair thinning, hair loss, dry and rough skin, brittle nails, and slowed skin healing. Treating the thyroid imbalance usually helps improve both hair and skin health over time.