Causes of Chapped Lips in Males

1. Environmental & Physical Factors

• Cold, wind, and dry weather — the most common cause. Exposure dries out the lip surface, causing microscopic fissuring, stinging, and burning. The lips lack sebaceous glands and are highly susceptible to moisture loss.
• Sun (UV) exposure — especially relevant for men with outdoor occupations. Chronic sun damage causes actinic cheilitis, a pre-malignant condition affecting the lower lip. Fair-skinned men with occupational sun exposure are at highest risk. — Sleisenger and Fordtran's Gastrointestinal and Liver Disease
• Mouth breathing — dries lip mucosa through constant airflow.

2. Habitual Causes

• Lip licking — saliva temporarily moistens but ultimately dehydrates and irritates the lips with repeated exposure to salivary enzymes.
• Lip biting — causes repeated mechanical trauma and inflammation.
• These habits directly predispose to angular cheilitis (painful fissures at the corners of the mouth). — Sleisenger and Fordtran's

3. Nutritional Deficiencies

• Vitamin B2 (riboflavin) deficiency — a well-established cause of cheilitis and angular stomatitis.
• Iron deficiency — can cause angular cheilitis and lip fissuring.
• Vitamin A toxicity (excess) — paradoxically, too much vitamin A (e.g., from supplements or retinoid therapy) also causes cheilitis and lip fissuring. — Fitzpatrick's Dermatology

4. Skin Conditions

• Atopic dermatitis (eczema) — cheilitis may be the first or only manifestation. Causes chronic dryness, scaling, and fissuring.
• Seborrheic dermatitis — affects the lip area and can cause chapping.
• Psoriasis — can extend to involve the lips.
• These are common conditions in males, often undertreated. — Andrews' Diseases of the Skin

5. Contact / Allergic Reactions

• Irritant or allergic contact cheilitis — caused by fragrances, lanolin, benzoyl peroxide, certain foods, dental products (toothpastes, mouthwashes), or topical medications.
• Men using aftershaves, balms, or certain sunscreens may be exposed to known allergens including fragrance mix and balsam of Peru.
• Presents with lip edema, erythema, scaling, and fissuring. — Sleisenger and Fordtran's

6. Infections

• Candidiasis (oral thrush) — can cause or worsen cheilitis, particularly at the corners of the mouth (angular cheilitis).
• Oral herpes (HSV-1) — chapped lips are both a trigger for and a presentation of herpes labialis recurrences (along with stress, fatigue, sun, and trauma). — Fitzpatrick's Dermatology

7. Systemic / Medical Conditions

• HIV/AIDS — cheilitis is a known complication, and protease inhibitor therapy (used in HIV treatment) is a common drug-related cause.
• Kawasaki disease — presents with dry, fissured lips and strawberry tongue (more relevant in younger males).
• Sjögren's syndrome — dry mouth and dry lips from reduced salivary secretion.
• Plummer-Vinson syndrome — iron deficiency with esophageal webs and cheilitis.
• Crohn's disease / tuberculosis — can cause granulomatous cheilitis (persistent lip swelling with fissuring).

8. Medications

• Retinoids (e.g., isotretinoin for acne) — a very common cause in young males being treated for acne. Causes widespread dryness including cheilitis with red, fissured lips.
• Protease inhibitors — used in HIV management.
• Various other drugs causing xerostomia (dry mouth) can secondarily dry the lips.

9. Dehydration

• Inadequate fluid intake reduces systemic hydration, contributing to dry, cracked lips — particularly in men with high physical activity or in hot environments.

Why Males Specifically?

• Men are less likely to use lip balm or moisturizing products routinely, leaving lips unprotected.
• Men have higher rates of outdoor occupational exposure (UV, wind, cold), increasing actinic and environmental cheilitis risk.
• Actinic cheilitis progressing to squamous cell carcinoma (SCC) of the lip disproportionately affects fair-skinned men, with HPV 16/18 as an additional risk factor. — Sleisenger and Fordtran's
• Retinoid use for acne (isotretinoin) is common in teenage and young adult males.