Our Symptom checker provides clinical advice on what to do next based on your symptoms.
Bitten by a spider? Not sure what to do? This article explains the best first aid treatment depending on the type of spider involved.
Bites and stings
Most insect bites and stings are relatively harmless - but some spiders, snakes and sea creatures can be very dangerous. Learn more about them here.
A prolonged erection occurs when blood in the penis becomes trapped and cannot circulate. This condition can be painful and can sometimes be caused by medicines used to treat erectile dysfunction. Learn more about prolonged erection here.
Floods and cyclones
Here's a list of common health risks and hazards that can strike during floods and cyclones, such as contaminated floodwater and snake bites.
A granuloma is a tiny cluster of white blood cells and other tissue, and is found in the lungs, head, skin or elsewhere. Granulomas are not cancerous; they form as a reaction to, for example, infections or foreign objects.