Itching

Itching for a month (at night). It all started with the buttocks, lower abdomen, now the chest, armpits, legs ... I observe hygiene. How to treat, what's the matter?

Itching for a month (at night). It all started with the buttocks, lower abdomen, now the chest, armpits, legs ... I observe hygiene. How to treat, what's the matter?

Severe itching in the legs and arms (from wrist to elbow). Antihistamines do not help, creams are also a stretch. There are no rashes, what can it be?

Severe itching in the legs and arms (from wrist to elbow). Antihistamines do not help, creams are also a stretch. There are no rashes, what can it be?