Is your skin red, itchy, inflamed, or painful?

These symptoms can indicate a host of skin conditions, including rosacea, dyshidrotic eczema, contact dermatitis, ringworm, impetigo, pityriasis rosea or rubra, actinic keratosis, tinea versicolor, cellulitis, and seborrhea.

Many skin conditions have no known cause, while others are due to such disparate causes as sun exposure or genetics. A few, like ringworm and impetigo, are the result of your skin coming into contact with a microorganism, like a fungus or certain bacteria.

 1. Ringworm

Ringworm, also known as “tinea” or “dermatophytosis,” has nothing to do with a worm, but the "ring" part of its name comes from the fact that it can cause a ring-shaped rash that’s red and itchy, Control and Prevention (CDC). Rather than a worm, a contagious fungal infection that lives on skin, surfaces, or items like towels, clothes, and bedding causes ringworm.

Symptoms, which include itchy, red, and cracked skin that’s sometimes accompanied by hair loss, typically appear between 4 and 14 days after coming into contact with the fungus,.

 2.Rosacea

Can’t stop blushing? It could be rosacea, a chronic, long-lasting skin condition that affects roughly 14 million Americans, most often adults between the ages of 30 and 60,. The condition usually hits men harder, though women are three to four times more likely to develop rosacea than men. ,

Rosacea occurs when facial blood vessels become stimulated and dilate, causing the skin to redden, blush, and flush easily. Other symptoms of rosacea include acne-like breakouts; red, thick, bumpy skin appearing on the face; and eye irritation and vision problems,

While there seems to be a genetic component to rosacea, there are also some environmental factors that can trigger flare-ups, including the sun, hot weather, spicy foods, cigarette smoking, and alcohol.

As far as diagnosing goes, there is no definitive test for rosacea, according to the mayao clinic. Your doctor will likely take all of your symptoms into account and rule out other skin conditions.

3.Eczema

Eczema, also known as dermatitis, is a chronic skin condition that affects 10 to 20 percent of children in developed countries around the world, . For about 90 percent of patients, it first appears before age 5. It may improve with age, 

Eczema causes dry and itchy skin with raised, red, scaly patches and sometimes fluid-filled blisters, . The issues typically appear on the hands or “bending” parts of the body, such as the inside of the elbows and back of the knees.

,Asthma, hay fever, and eczema often occur together, partly because of certain immune-related genes. “These all tend to be allergic manifestations and tend to all run in families with allergic tendencies,”\

4.Contact Dermatitis

Contact dermatitis is a form of eczema that presents as irritated skin after the skin comes in contact with something that triggers that reaction, “Contact dermatitis is an allergic phenomenon,” Davis says. “It is something you came into contact with and irritates your skin, or an allergic dermatitis like poison ivy, which is not hereditary.”

5.Impetigo

mpetigo is a bacterial infection that usually causes large blisters or crusted sores,]. Typically traced to one of two bacteria — group A streptococcus or Staphylococcus aureus — impetigo is common among children and most often appears around the mouth and nose or on the arms and legs,. It is very itchy and very contagious.

6.Cellulitis

While cellulitis starts as a superficial infection of the skin — sometimes due to a tiny break in the skin that allows in bacteria — it can become a serious issue if the bacteria enter the bloodstream, . It could also be caused by bacteria entering broken skin caused by eczema, Eczema  can appear anywhere on the body and can be associated with athlete’s foot, .