Itching, or pruritus, causes an intense urge to scratch the skin. Depending on how widespread it is, pruritus is often divided into two categories:
Generalised pruritus affects the whole body. It can be triggered by skin conditions (eczema, psoriasis, chickenpox), medicines (antibiotics, aspirin), or even very dry skin or non-skin-related conditions (blockage in the bile ducts, kidney problems, blood or hormonal disorders).
Stress is also a common cause of itching (in such cases, it is not true pruritus, but rather scratching reflexes caused by nervousness).
Localised pruritus affects a specific part of the body. It can occur on the scalp, caused by head lice, psoriasis or a bacterial or fungal infection. Itching can also be localised to a specific area of skin, such as skin folds or the spaces between the fingers (a fungal infection such as intertrigo), in the genital area (fungal infection, overly harsh soap), the anal area (fungal infections, haemorrhoids, pinworms), the eyes (conjunctivitis), the throat (pharyngitis), etc.












