Conditions

Salivary gland stones are small stones that form in salivary glands in your mouth and can block the flow of saliva (spit). They're not usually serious and you may be able to remove them yourself.

Sarcoidosis is a rare condition that causes small patches of swollen tissue, called granulomas, to develop in the organs of the body. It often affects the lungs and lymph nodes, and can also affect your skin.

Scabies is an itchy rash caused by mites. It's spread through close skin contact, and anyone can get it. It should be treated quickly to stop it spreading.

Scarlet fever is a contagious infection that mostly affects young children. It's easily treated with antibiotics.

A scar is a mark on the skin after a wound or injury has healed. You cannot get rid of a scar, butmost will fade over time.This can take up to 2 years or more, butthere are some things you can do to help it heal or improve how it looks.

Schistosomiasis is a parasitic infection caused by blood flukes, transmitted through contact with contaminated freshwater. It can affect the urinary tract, intestines, or other organs if left untreated.

Sciatica happens when the sciatic nerve, which runs from your lower back to your feet, is irritated or compressed. It usually gets better in a few weeks to a few months but can last longer.

Scleroderma is the name for a range of conditions that affect your immune system (autoimmune conditions) and can cause hard, thickened areas of skin and sometimes problems with muscles, bones, internal organs and blood vessels.

Scoliosis is a condition in which the spine curves sideways, often developing during childhood or adolescence. Severity can vary, and treatment depends on the degree of curvature and symptoms.

Scurvy (severe vitamin C deficiency) is rare as most people get enough vitamin C in their diet. It's usually easy to treat.