Why do I get seasonal pimple-like rashes on my back?

Dandruff is caused by yeast overgrowth on scalp. Fungal infection can also cause dandruff Over-the-counter shampoos containing zinc or salicylic acid can help. Antifungal shampoos can treat fungal infections. Consult a doctor if symptoms persist. 

Dark skin patches and acne can occur due to sun exposure, hormonal changes, or clogged pores. To improve your skin, use gentle cleansers, keep your skin moisturized, and avoid harsh products. Drink plenty of water, eat healthy food, and resist picking at acne to prevent scarring. Also, protect your skin from the sun to reduce further darkening.

You might be suffering from a fungal skin infection known as ringworm. Ringworm can turn your skin into white, reddish, thick, dry, and scaly. Apart from that, the skin can get very itchy. Ringworm is a type of fungus that spreads through skin-to-skin contact. To help get rid of ringworm, you can use antifungal cream. However, it would be best if you cleaned and dried the area.

Cle­aning a scratch often with soap and cream is smart. Small cuts can allow tetanus ge­rms inside. Tetanus makes muscle­s tight and jerky - dangerous. If injured, take­ the tetanus shot within one to thre­e days. Since it's bee­n four days and your scratch is red and hurts, get the shot today to be­ secure. That shields you from risks. 

Oily skin is common and can lead to pimples and acne. The symptoms are so shiny skin, big pores, and sometimes breakouts. The cause of oily skin is the excessive sebum production by the skin. Salicylic acid face wash to unclog pores will suffice for this purpose. Oil control is also possible with a serum containing niacinamide.