Hello dear I understand your concern Alcohol could be a cause of itchy armpits. It cause dehydration and cause dryness of skin. Dryness of skin cause itching. In long term use it damage the liver, improper circulation of bile acid and pigments, can cause itching. I advise you to go for liver profile test to know the liver damage due to chronic alcohol use. Other causes could be due to excessive sweating, poor hygiene, and fungal infection. Following advises will helpful: Drink plenty of water and fruit juice of orange, pineapple to maintain hydration Tablet cetrizine at the bed time Apply cetaphil mosturizer cream Application of clotrimazole for fungus infection Wear loose cotton garments Maintain proper hygiene. Hope this may help you Contact HCM for further health query Best regards Dr.Sagar