How can a fungal infection cause an armpit lump?

A fungal infection can cause an armpit lump known as a “fungal granuloma”. This occurs when the fungus lodges itself beneath the skin and forms an abscess filled with inflammatory cells and other debris. Some people experience a hard, painless lump under the arm, while others may have redness or itching in that area.

The most common types of fungal infections associated with armpit lumps are tinea corporis (ringworm) and candidiasis (yeast infection). Tinea corporis typically causes annular lesions which form patchy or ring-like rashes on the skin surface. Candidiasis is usually caused by Candida albicans fungi which itself is responsible for many types of systemic fungal infections including oral thrush, jock itch and diaper rash.

To diagnose whether a person has a fungal infection causing an armpit lump, doctors will visually inspect the area before performing laboratory tests such as swab cultures to identify which type of fungus is present. Treatment involves using topical antifungal creams such as miconazole or clotrimazole in order to kill off any remaining active fungi living within the affected area; this may then need to be followed up by oral medications such as fluconazole or ketoconazole tablets if further treatment is required. In severe cases, surgery may also be needed to remove any stubborn areas of disease that cannot otherwise be treated topically or systemically via medication.