When you have itchy skin -- also known as pruritis -- external or internal conditions may be causing the uncomfortable sensation. Whether your skin looks normal or has bumps, blisters or red, rough patches, MayoClinic.com notes that it's vital to determine the root cause of the discomfort so you can choose the right therapy, such as medication or anti-itch lotions and baths, to soothe your skin.
Skin Inflammation
If irritants affect your skin, it may itch and appear inflamed and blistered, according to MayoClinic.com. If the irritation is concentrated in one area, MayoClinic.com notes that an allergic reaction to soaps, wool, chemicals or poison ivy may be the culprit. If the itch encompasses a larger area, a food allergy or a skin condition, such as psoriasis, chickenpox, hives or scabies may be the cause.
Dry Skin
If your itchy skin flares up in winter months, for example, dry skin may be to blame. MedlinePlus notes that dry, flaky skin may cause an uncomfortable itching sensation and suggests consulting your doctor or a dermatologist if you have a chronic itch without an accompanying rash, open sores from constant scratching or excess dryness that you can't relieve with over-the-counter skin soothing lotions, for instance.
Medical Conditions
When your skin itches constantly, but doesn't have an accompanying rash or dry appearance, consult your physician. MayoClinic.com notes that itching that affects your entire body may be the result of a medical condition, such as celiac disease, kidney failure, anemia, liver disease, thyroid problems or cancer. The website points out that treating the underlying condition may relieve the itch, but your doctor may also prescribe topical medications, such as lidocaine, benzocaine or camphor and calamine lotion to temporarily soothe your skin.
Fungus
An itch concentrated in one spot that also features a red rash, scaly patch or swelling may be the result of fungus. KidsHealth notes that tinea, for instance, can cause circular-shaped ringworm rash that can appear on your scalp, arms, legs or chest. The yeast candida can generate an itching sensation around the groin area when it causes diaper rash or a yeast infection. Itching may also accompany athlete's foot or "jock itch" when a fungal infection affects the feet, groin area or upper thighs.
Pregnancy
Your skin, particularly the area around your stomach and breasts, may be excessively itchy when you're pregnant. BabyCenter notes that changes to your hormones and the stretching of your skin to accommodate your growing baby may account for the itching sensation. The website also points out that pregnancy may exacerbate conditions that typically make your skin itch, such as eczema, food allergies and dry skin, and that the boost in estrogen may also cause your hands and feet to itch. BabyCenter suggests informing your physician about the need to scratch, since a severe itch in the third trimester may indicate a rare liver problem called intrahepatic cholestasis of pregnancy.
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