There are many reasons for hairfall or thinning of hair on the scalp. So first and foremost we have to find the cause with the help of detailed history and examination. Some of the common causes are nutritional deficiency, hormonal causes like androgenic alopecia or patterned baldness, hypothyroidism, telogen effluvium etc. Unless we find and treat the cause there is no point in giving non specific treatment. Oils or shampoos do not have any effect on hair growth as they are not absorbed in the skin. Moreover, you should never self treat with anything. Please send photographs using online consult option for proper diagnosis and detailed prescription.

Seems to be eczema

Fungal infection or Ring worm.. when occurs in groin, called as jock itch.. Usually fungal infection is common in moist areas of body like skin folds..It's mostly circular or round in appearance.. May be red or black in colour.. Treatment depending on the type and severity.. Avoid sharing clothes, towels and soap; sweating also increases it..As it has to be differentiated from eczema and infection, its a must to see and confirm the diagnosis for proper treatment..So, please send photos of the affected area by direct online consultation for accurate diagnosis and treatment.

Fungal infection is very common near the crotch area due to excessive sweating. You may have that . Do share the clinical pictures and history for online consultation. Don’t use over the counter medicine which would worsen the condition.