Ken Jones, a leading amateur microscopist, specialises in video-filming pond-life. One of his videos captures the enigmatic and graceful movement of Volvox, and he has kindly allowed us to show some extracts from his film on this page. A single Volvox colony spins through the dark waters of a pond. Daughter cells are just visible inside. Micscape Editor's note.
Heart, liver, or kidney disease. Sometimes swelling can indicate a problem such as heart, liver, or kidney disease. Ankles that swell in the evening could be a sign of retaining salt and water because of right-sided heart failure. Kidney disease can also cause foot and ankle swelling.
Swollen ankles may be the side effect of a medication or the result of a localized injection. Sodium retention can lead to edema in the ankles. Blockage of the lymph nodes in the legs can cause ankle or leg swelling. Allergic reactions can cause swelling, as well as some neuromuscular disorders. A blood clot called a deep venous thrombosis (DVT) can cause ankle swelling. This is a blood clot that forms in a deep vein and commonly occurs in the leg. DVTs can be asymptomatic, but in many cases they display symptoms such as pain, swelling, and engorged veins.