why antihistamines cause sedation

New born...Causes, diagnosis and treatment of skin rash. Also suggest precaution/ advice for parents to avoid it

chronic itching, both legs, 58yr female plz diagnose

A8 year boy presents to his family doctor because he has itchy eyes for 3 weeks. He is otherwise we'll, but reports bilateral symptoms of itching burning and tearing. These symptoms are progressive and associated with a thick stringy discharge. On examination he is afebrile. On eye examination he also has Conjunctivitis pattern arranged in a cobblestone pattern on his upper tarsal Conjunctiva and bilateral, diffuse Conjunctival injection (left eye pictured). His family history is significant for maternal side asthma and eczema. what is most likely DX? A. Adenovirus Conjunctivitis B. Atopic keratoconjunctivitis C. Bacterial Conjunctivitis D. blepharitis

Age 52/m diabetic have this color change, history of dvt and copd and was taking warferin.. Started with minocycline recently... What could be the reason for Color change?? And how can we manage it?

M/45 years old patient has whitish and black lesions with severe itching since 3 years please give diagnosis and treatment.