Differential Diagnosis for a Small Area Under One Foot Feeling Hot
- Single Most Likely Diagnosis
- Plantar fasciitis: This is a common condition characterized by inflammation of the plantar fascia, a band of tissue that runs along the bottom of the foot. The hot sensation could be due to inflammation and irritation of the plantar fascia.
- Other Likely Diagnoses
- Callus or corn: A callus or corn can cause a localized area of discomfort and warmth due to friction and pressure.
- Ingrown toenail: An ingrown toenail can cause pain, redness, and warmth in the affected area.
- Blisters: Friction or pressure can cause blisters, which can feel hot and painful.
- Erythema or cellulitis: A skin infection can cause redness, warmth, and swelling in the affected area.
- Do Not Miss Diagnoses
- Deep vein thrombosis (DVT): Although less common in the foot, a DVT can cause warmth, redness, and swelling in the affected area. Missing this diagnosis can be life-threatening.
- Osteomyelitis: A bone infection can cause pain, redness, and warmth in the affected area. If left untreated, it can lead to serious complications.
- Diabetic foot ulcer: In people with diabetes, a foot ulcer can cause a hot sensation due to infection or poor circulation. Missing this diagnosis can lead to serious complications, including amputation.
- Rare Diagnoses
- Erythromelalgia: A rare condition characterized by burning pain, heat, and redness in the hands and feet.
- Complex regional pain syndrome (CRPS): A rare condition characterized by chronic pain, inflammation, and sensitivity in one limb after an injury or trauma.
- Neuroma: A rare condition where a nerve in the foot becomes inflamed or irritated, causing pain, numbness, and warmth in the affected area.