Why do mouth ulcers keep reappearing despite treatment?

Herpes simplex is a virus that causes cold sores on your lips. These cold sores can feel painful, itchy, or tingly. Don’t touch or pick at them. You can use a cold compress and over-the-counter creams to help soothe them. Eating healthy and getting plenty of rest will help your body fight the virus better.

Fungal infections can lead to an itchy rash in the vaginal and thigh area. The warm and humid climate is an ideal growth environment for fungi. Keep the area dry and clean. You can use antifungal creams available over the counter to help clear it up. Moreover, wearing loose and breathable clothes is also important. 

It seems like your baby has some­ small spots around their bottom area along with a red diape­r rash. This can happen when the diape­r stays wet and irritates their se­nsitive skin. Change diapers ofte­n to keep them dry. Use­ soft wipes and let the are­a air out before putting on a fresh diape­r. Also, try a mild diaper rash cream to soothe the­ irritation.

Itching on cheeks, hands, and back could be due to: 
- Dry skin
- Allergic reaction 
- Eczema or psoriasis 
- Bug bites or hives 
- Medication side effect. 

Try moisturizing, avoiding irritants, and OTC antihistamines. If symptoms persist, see a dermatologist. 

The numerous factors that lead to skin allergies on the backside and legs include irritants, allergenic agents, infection or autoimmune disorders. It is necessary to consult a dermatologist that will conduct sufficiently comprehensive evaluation and suggest adequate options for treatment. Self-diagnosis and self treatment can make the situation only worse complicating it.