Skin rashes, though varied, share common traits: inflammation, irritation, and discomfort. While not usually life-threatening, they can cause embarrassment and are triggered by different factors, so diagnosis and treatment should be individualized. “For an accurate diagnosis and appropriate treatment, it’s suggested that you meet a specialist.”

**1. Atopic Dermatitis**
A common, chronic condition with flare-ups that cause “intense itching and redness.” Symptoms may include red patches, blisters, and scaly skin. Though its cause is unknown, it’s often linked to “a family history of seasonal allergies,” asthma, or genetic factors.

**2. Psoriasis**
This autoimmune condition affects about 2% of the global population. It causes “pruritic, erythematous, and sharply defined plaques” often covered in silvery scales. It appears mostly on the trunk, scalp, and limbs and may spread widely.

**3. Allergic Contact Dermatitis**
Triggered by direct contact with allergens like perfumes or cosmetics. It typically affects only the area exposed and causes “rash, swelling, itching, blisters and scabs.”

**4. Pityriasis Versicolor**
A fungal disorder seen mostly in adolescents, especially females, marked by “well-defined, slightly scaly, variable-color lesions.”

**5. Seborrheic Dermatitis**
Affects areas rich in oil glands like the scalp and face. It’s linked to stress, obesity, and climate. Symptoms include “reddened skin, yellow crusts, and resistant dandruff.”