S90.42

Clinical Causes: Repeated friction from ill-fitting shoes or accessories Continuous pressure on the toe caused by tight footwear or activity Minor skin trauma without thermal injury Certain skin conditions that weaken skin integrity Prolonged walking or standing on uneven surfaces Sudden increase in activity level or new footwear

Key Symptoms: A fluid-filled blister on the toe, usually raised and round Discomfort or tenderness in the affected area Redness and swelling around the blister Possible skin discoloration or irritation Sensitivity to touch in the blistered area

Diagnosis Path: Diagnosis involves a physical examination of the affected toe. A healthcare provider will evaluate the blister’s appearance, check for signs of infection or additional injury, and review the patient’s activities and footwear habits. In some cases, if infection is suspected or the diagnosis is uncertain, a sample of the blister fluid may be analyzed. No invasive procedures are usually necessary for diagnosis, and the condition is primarily based on clinical assessment.

Treatment Protocols: Treatment focuses on protecting the blister and preventing infection. Common approaches include: - Keeping the blister intact to protect the underlying skin, unless it is large or painful, then draining should be performed under sterile conditions by a healthcare professional. - Applying sterile dressings or bandages to prevent irritation and contamination. - Using over-the-counter pain relief if needed. - Avoiding further friction or pressure by wearing properly fitting shoes. - Keeping the area clean and dry. - Watching for signs of infection, such as increased redness, warmth, pus, or worsening pain. In most cases, blisters heal on their own without complications, but persistent or infected blisters might require medical attention. Preventive measures include selecting well-fitting footwear, wearing moisture-wicking socks, and reducing activities that cause repetitive trauma to the toes.