1 It's the law! 2  All drugs have to be tested on animals before they can be tested on humans. 3  To make sure human patients are given a safe dose of a drug. 4  Patients feel safe and are more likely to trust medicines if they know they have been tested on animals first.erhaps the law could be changed so that animal testing was optional, rather than compulsory. Scientists could decide not to test drugs on animals if they knew that it was safe to do so. We would need alternatives to animal testing, which could safely test drugs without harmful consequences for humans.
1 Eczema, or atopic dermatitis, is a rash that primarily occurs in people with asthma or allergies. The rash is often reddish and itchy with a scaly texture.  Psoriasis is a common skin condition that can cause a scaly, itchy, red rash to form along the scalp, elbows, and joints.
Dry skin. Dry skin is one of the most common causes of itchy skin. If people do not see any bright red bumps or notice a sudden change to their skin, dry skin is a likely cause. Environmental factors that can lead to dry skin include excessively hot or cold weather with low humidity, as well as washing too much.