Angular cheilitis and low iron

Iron supports healthy blood cells and renewing tissues. When deficiency is present, soreness around the mouth may occur alongside tiredness, reduced exercise tolerance, dizziness, headaches, paleness, or changes in the tongue and nails. None of these features proves that iron is low. Angular cheilitis also develops when saliva repeatedly wets the corners, dental shape creates folds, dentures fit poorly, or inflamed skin becomes affected by yeast or bacteria.

A medical history and blood tests can assess iron status and look for anaemia. The clinician may ask about menstrual or other bleeding, dietary restrictions, pregnancy, digestive symptoms, blood donation, and medicines that can affect the stomach or bleeding. Meanwhile, keep the mouth corners clean and dry, limit lip licking, and shield external skin with a suitable plain barrier. Avoid taking iron simply because the cracks resemble photographs online.

Seek routine medical care if the cracks repeatedly reopen, extend beyond the corners, do not improve, or occur with fatigue, breathlessness, dizziness, paleness, unexpected weight change, abdominal symptoms, or bleeding. Get urgent care for fainting, chest pain, severe breathing difficulty, vomiting blood, black tar-like stool, or heavy uncontrolled bleeding. These red flags require prompt assessment regardless of whether the lip changes seem mild.

Ask whether the results show low iron stores, anaemia, or another deficiency; what could explain the finding; and whether further investigation is needed. Discuss whether the lip corners show signs of infection or dermatitis and which local product is safe to use while the broader cause is addressed.