According to New Health Guide, conditions such as psoriasis, allergies, infections, eczema, erythema nodosum and Bowen’s disease can cause red spots on the leg. Other causes such as ingrown hair or folliculitis are common and typically do not require medical attention from a skin specialist.
New Health Guide states that psoriasis occurs from an overload of skin cell production. There is no specific treatment for this condition, and red spots on the legs are a common symptom. Red spots occurring from allergies often occur after exposure to greenery and bug bites from outdoor activities. Red spots can also occur from an allergic reaction to medication or cosmetics. An infection from a bacteria contamination or an external irritation can cause a body reaction of red spots, and eczema also sometimes causes red spots along with rashes and bumps.
Erythema nodosum is a rare skin condition that causes painful red spots on the arms and legs that later turn purple and brown, notes New Health Guide. These spots may be recurrent but typically disappear after six weeks. Bowen’s disease is a cancerous condition, and red patches on the lower legs represent the abnormal cell growth on the epidermis. These red spots may cause bleeding but are rarely painful or itchy.