Intense itchy red rash on scrotum and penile shaft

For about 6 months now I have had an intense itch on the shaft on the penis after trimming the area. I thought this was normal so I continued to trim thinking the itch would go away. This was made worse by my scrotum becoming extremely red and inflamed with severe itching, this also occurred of my perinium as well. The apperance is bright red with feels within the hair follicles and the sebescous glands. When i wake up there is no rash and it is not worse at night but is still slightly irritating. I've found this condition is worse when moving and feels deep within the skin like someone is sticking pins inside my skin. I have used these so far but have had no success:

Clotromizol
Miconizole nitrate
Hydrocortisone (relieves itching temporarily but soon returns)
Various Moisturisers
Perimithin for scabies
Fucidin Acid antibiotic cream
Metronidazole oral antibiotic
Clarithromycin oral antibiotic
Extremely mild soaps
Non bio detergents
Coconut oil due to its antifungal and antibacterial properties
Been tested for STD's also but is all clear.

If someone has had this and find the solution please tell me what it is as this is ruining my social life due to the constant irritation and embarrassment of the problem.