Overview
The skin covers the entire body and is a major part of the integumentary system, along with hair, nails, and glands. It protects the body from the outside environment, helps prevent fluid loss, and supports the immune system. Skin also contains nerves that let you feel touch, pain, pressure, and temperature.
Key Symptoms
Healthy skin varies naturally in color, thickness, and texture from person to person and across body areas. Signs that something may be wrong include rash, itching, dryness, pain, swelling, color changes, sores that do not heal, unusual lumps, or changes in a mole. Skin symptoms may come from local irritation or from health problems affecting the whole body.
Causes and Risk Factors
Skin problems can be caused by irritation, allergies, infections, autoimmune conditions, long-term sun exposure, heat, cold, friction, or inherited conditions. Age, type of work, hygiene, climate, and contact with chemicals or plants can affect skin health. Some medicines and medical conditions can also make the skin more fragile or sensitive.
Who Is Affected
Everyone has skin and can develop skin concerns at any age. Babies and older adults may have more delicate skin, while people who work outdoors or with irritants may face higher exposure risks. Skin conditions can look different on different skin tones, which may affect how quickly problems are recognized.
Prevention
Basic skin care includes gentle washing, moisturizing when needed, protecting skin from too much sun, and avoiding known irritants. Wearing protective clothing and gloves may help if you work with chemicals, water, or rough materials. Checking your skin regularly for new or changing spots can help you notice problems early.
Diagnosis and Tests
A healthcare professional usually starts by looking closely at the skin and asking about symptoms, exposures, medicines, and medical history. In some cases, tests such as a skin swab, allergy testing, blood tests, or a small skin sample called a biopsy may be needed. Diagnosis may depend on where the skin change is, how long it has lasted, and whether other symptoms are present.
Treatment Categories
Treatment depends on the cause of the skin problem. It may include avoiding triggers, using skin care products, treating infection or inflammation, protecting wounds, or managing an underlying health condition. Some skin changes need monitoring over time, while others need prompt medical evaluation.
Living With It
Long-term skin problems can affect comfort, sleep, self-esteem, and daily activities. Keeping a record of triggers, products used, and symptom changes may help during medical visits. If a skin condition affects mental well-being or social life, it is important to discuss that with a healthcare professional.
Diet and Lifestyle
General health habits support skin health, including staying hydrated, getting enough sleep, and avoiding tobacco smoke. A balanced diet helps provide nutrients the skin needs, but skin problems are not always caused by food. Limiting unnecessary skin products and choosing fragrance-free options may help some people with sensitive skin.
When to Seek Medical Care
Seek medical care if you have a rash that is spreading, severe itching, pain, signs of infection, a wound that is not healing, or a new or changing mole or growth. Also get medical advice if skin changes come with fever, weight loss, joint pain, or other whole-body symptoms. Ongoing or unexplained skin problems should be assessed by a qualified clinician.
When It May Be an Emergency
Get urgent medical help for trouble breathing with hives or swelling, severe burns, rapidly spreading skin redness, blistering over large areas, skin symptoms with confusion or fainting, or signs of a severe allergic reaction. Emergency care is also needed for major bleeding, deep wounds, or serious infection with fever and worsening pain.
Questions to Ask a Healthcare Professional
You may want to ask what might be causing the skin change, whether testing is needed, and what warning signs to watch for. It can also help to ask how to protect the skin, whether products you use could be irritating it, and when follow-up is needed. If a spot or mole has changed, ask whether it should be monitored, photographed, or sampled.