Discoloration after hair removal can occur with which condition?

• A. Diabetes
• B. Thyroid disease
• C. Pregnancy
• D. Cancer

Answer: (B)

Discoloration after hair removal happens when the skin’s normal pigment response is affected by a systemic factor that changes how the skin reacts to irritation. Thyroid disease can alter skin properties such as moisture, texture, and how pigment-producing cells (melanocytes) respond to inflammation. When hair is removed, the skin is irritated and may heal with pigment changes more readily if thyroid function is abnormal, leading to post-inflammatory discoloration in that area.

Diabetes can slow healing and raise infection risk, which might cause prolonged redness or scarring but isn’t the typical driver of pigment changes after hair removal. Pregnancy is associated with hormonal pigmentation like melasma, but those changes are broader and not specifically triggered by the removal process. Cancer doesn’t usually cause this localized pigment change after hair removal.