what is the good treatment if somebody fell itchy ...

What is the treatment of Skin itching ?
Avoid scratching the skin as much as you can  and you should wear comfortable and clothes that are made of cotton .  Avoid wearing tight clothes and to pay attention to your personal hygiene  . You can use creams such as Triderm twice daily and use medications such antihistamine tablets to relieve itching and allergy . Besides that you should do clinical assessment if your condition presisted or worsens in the next few days
What are the causes of Skin itching ?

• Viral infection.
• Skin allergy
• Fungal infection
• Bacterial infection
• Sweating
• humid atmosphere
• Sexual diseases

What Should you do at the moment ?
You should follow the tips and advice provided to relieve itching of the skin . If there is no improvement , you should consult your dermatologist for assessment