why do my armpits itch

Itchy armpits are commonly caused by several factors including sweat, hair growth, skin irritation, allergic reactions, infections, and contact with certain fabrics or personal care products. Sweat accumulation mixes with dead skin cells and bacteria, causing inflammation and itchiness. Hair growth or shaving can also lead to itching due to razor burn or ingrown hairs. Allergic reactions to deodorants, soaps, or laundry detergents often cause contact dermatitis, leading to itchy, red, or flaky skin. Skin conditions like eczema, fungal infections (such as candida), and heat rash can also cause armpit itch. In rare cases, itchy armpits might be a symptom of more serious conditions such as lymphoma or inflammatory breast cancer, especially if accompanied by other symptoms like swelling, redness, or lumps. Poor hygiene, tight clothing, and sensitive skin also contribute to armpit itchiness. If the itch persists or worsens, consulting a healthcare provider is recommended for proper diagnosis and treatment.