Hello, 
Thanks for posting your query at DoctorSpring.com
I can understand your concern. I reviewed the picture. 
I would like to know if he has applied any lotion or cream following which he has got this rash? 
Is it itchy ? Were there fluid filled blisters clustering together?
Please let me know. 
Thanks 
                                                    
                                                    
                                                    
                                                 
                                            
 
                                            
                                        
                                            
                                            
	
                                                
                                                    
                                                    Patient replied : 
                                                    
                                                    
                                                        Hello Doctor, Thank you for your prompt response.
He has not applied any cream or anything.
It is itchy. Especially, when he has perspiration, it gets more itchy. There is no blisters with liquid. When I touch the rash, it is super try.
Regards, Tses
                                                    
                                                    
                                                 
                                            
 
                                        
                                            
	
                                                
                                                
                                                    
                                                        Hello 
Thanks for your reply. 
You seem to be having a condition known as pityriasis rubra pilaris. Its a condition which is referred to as papulosquamous condition characterised by reddish irange scaling patches with keratotic papules.
The other possible diagnosis is a heat rash or irritant contact dermatitis. 
I would recommend application of cortisone lotion twice a day. I would also suggest that you visit your dermatologist who can examine you thoroughly and confirm the diagnosis and treat accordingly. 
Take care