Hello, the situation you stated may be amyloidosis of skin, which refers to a chronic skin disease in which amyloid is deposited in normal skin tissue and itches. The lesions are hemispherical cone papules the size of sesame seeds, hard, red or brown and densely distributed.
Suggestion:
There is no specific therapy. If itching is severe, antihistamines can be used. In severe cases, intravenous drip of procaine and vitamin C can be used. Triamcinolone acetonide prednisone can also be injected locally and 0. 1% tretinoin cream can be used externally. I wish you good health!